Indiana Jones and the Great Circle
Indiana Jones and the Great Circle
Game
Game2017
Alien Shooter TD
Developer Sigma Team Inc.
Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life! From the Steam store page
175 reactions from 1 source (Steam reviews) · newest Aug 13, 2026 · last updated Oct 8, 2026 · How this works
Audience score
89
LovedLoved
155 positive · 20 negative
95% range 83–92%
| Source | + | − | = |
|---|---|---|---|
| Steam reviews | 155 | 20 | 0 |
Steam's own rating
Very Positive
783 of 918 reviews positive (all languages, per Valve)
What people are saying
Summary pending — the reactions are listed below.
Reactions
60 of 175 · most liked first⢠⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⠤⢤⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⢸⠀⠀⡤⠤⠤⣤⣤⣄⣀⣀⣀⣀⣀⣀⠀ ⡇⠉⠒⠤⣀⠀⠀⠀⠀ ⢸⠀⠀⡇⠀⠀⠀⠀⠀Dad,⠀⠀⠀ ⢸⠀ ⡇⠀⠀⠀⠀ ⠉⠒⠤⣀⠀ ⢸⠀⠀⡇⠀are u winning? ⡇ ⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⡇ ⢸⠀⠀⠙⠒⠒⠒⢢ ⢀⠖⠒⠒⠶⠾ ⡇⠀⠀⠀⠀⠀⠀⠀ ⠀ ⡇ ⢸⠀⠀⠀⠀⠀⠀⠀⠱⠎⠀⠀⡀⠀⠀⠀ ⠀ ⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇ ⢸⠀⠀⠀⠀⠒⠒⣲⢶⣶⣞⠉⠀⠀⠀⠀ ⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇ ⢸⠀⠀⠀⠀⠀⣼⡥⢾⣘⣆⢱⡀⠀⠀⠀ ⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇ ⢸⠀⠀⠀⠀⠀⡇ •⠀ ⠀• ⠇⠀⠀⠀ ⠀⡇⠀⠀⠀⠀⠀⠀⠀ ⠀⡇ ⢸⠀⠀⠀⠀⠀⠱⠈⠢⠤⠂⠎⠀⠀⠀⠀ ⠀⡇⠀⠀⠀⠀⠀⠀⠀o ⢰⠀ ⢸⠀⠀⠀⠐⢤⣄⡈⢹⠉⣠⠔⠋⠀⠀ ⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀ ⠀⢸⠀ ⢸⠀⠀⠀⠀⠀⠀⠉⢻⠛⠁⠀⠀⠀⠀⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀ ⠀ ⢸⠀ ⢸⠀⠀⠀⠀⠀⠀⠀⢸⡀⠀⠀⠀⠀⠀⠀⠀ ⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠀ ⢸⠀⠀⠀⠀⠀⠀⣠⠋⢳⡀⠀⠀⠀⠀⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀ ⠀ ⢸⠀ ⢸⠀⠀⠀⠀⠀⡰⠃⠀⠀⠳⠀⠀⠀⠀⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⢸⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠢⢄⣀⠀⠀⠀⠀ ⠀⢸⠀…
positive · reviewer's own thumbsView post →One of the best tower defense games that is very hard in the beginning Different soldiers almost all are awesome (except sniper so useless) You can upgrade your weapons and spend cash to get legionaries Tons of different difficulties and enemies! You have spend money reloading your soldier's ammo You can spend money training soliders Love the concept!
positive · reviewer's own thumbsView post →That's a real (and amazing) TD game!! Very hectic and loud, with lots of levels and endless modes, various units, enough placement spaces to try different strategies, and MANY weapons and upgrades to choose from! + Upgrades in this game DO make a difference as they truly improve your troops and weapons! Even managing the ammunition-reloads for your squad which can be automated if you feel you can afford it is a key strategical component of this game, which also contributes to making it very…
positive · reviewer's own thumbsView post →+20 SOCIAL CREDIT ( ͡° ͜ʖ ͡°) ⣿⣿⣿⣿⣿⠟⠋⠄⠄⠄⠄⠄⠄⠄⢁⠈⢻⢿⣿⣿⣿⣿⣿⣿⣿ ⣿⣿⣿⣿⣿⠃⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠈⡀⠭⢿⣿⣿⣿⣿ ⣿⣿⣿⣿⡟⠄⢀⣾⣿⣿⣿⣷⣶⣿⣷⣶⣶⡆⠄⠄⠄⣿⣿⣿⣿ ⣿⣿⣿⣿⡇⢀⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⠄⠄⢸⣿⣿⣿⣿ ⣿⣿⣿⣿⣇⣼⣿⣿⠿⠶⠙⣿⡟⠡⣴⣿⣽⣿⣧⠄⢸⣿⣿⣿⣿ ⣿⣿⣿⣿⣿⣾⣿⣿⣟⣭⣾⣿⣷⣶⣶⣴⣶⣿⣿⢄⣿⣿⣿⣿⣿ ⣿⣿⣿⣿⣿⣿⣿⣿⡟⣩⣿⣿⣿⡏⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ ⣿⣿⣿⣿⣿⣿⣹⡋⠘⠷⣦⣀⣠⡶⠁⠈⠁⠄⣿⣿⣿⣿⣿⣿⣿ ⣿⣿⣿⣿⣿⣿⣍⠃⣴⣶⡔⠒⠄⣠⢀⠄⠄⠄⡨⣿⣿⣿⣿⣿⣿ ⣿⣿⣿⣿⣿⣿⣿⣦⡘⠿⣷⣿⠿⠟⠃⠄⠄⣠⡇⠈⠻⣿⣿⣿⣿ ⣿⣿⣿⣿⡿⠟⠋⢁⣷⣠⠄⠄⠄⠄⣀⣠⣾⡟⠄⠄⠄⠄⠉⠙⠻ ⡿⠟⠋⠁⠄⠄⠄⢸⣿⣿⡯⢓⣴⣾⣿⣿⡟⠄⠄⠄⠄⠄⠄⠄⠄ ⠄⠄⠄⠄⠄⠄⠄⣿⡟⣷⠄⠹⣿⣿⣿⡿⠁⠄⠄⠄⠄⠄⠄⠄⠄ +1 WAIFU ⣿⣿⣿⣿⠛⠛⠉⠄⠁⠄⠄⠉⠛⢿⣿⣿⣿⣿⣿⣿⣿ ⣿⣿⡟⠁⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⣿⣿⣿⣿⣿⣿⣿ ⣿⣿⡇⠄⠄⠄⠐⠄⠄⠄⠄⠄⠄⠄⠠⣿⣿⣿⣿⣿⣿ ⣿⣿⡇⠄⢀⡀⠠⠃⡐⡀⠠⣶⠄⠄⢀⣿⣿⣿⣿⣿⣿ ⣿⣿⣶⠄⠰⣤⣕⣿⣾⡇⠄⢛⠃⠄⢈⣿⣿⣿⣿⣿⣿…
positive · reviewer's own thumbsView post →new title: Waste of money
negative · reviewer's own thumbsView post →Honestly I didn't have much expectations from this game. I loved Alien Shooter as a kid, but I couldn't imagine that game concept to turn into a decent TD, especially since I've played a lot of TDs, even back in Warcraft 3 times. And I must say that this game deserves my thumbs up for the sole fact of proving me wrong. Sure, the game isn't really some real masterpiece in its genre, but it's a really, polished, decent TD. While I didn't like the design of all the levels, I did enjoy the game…
positive · reviewer's own thumbsView post →This Game makes your schlong bigger!
positive · reviewer's own thumbsView post →Alien Shooter TD just extremely dynamic and super aggressive title! Love everything about this game from oceans of blood and soldiers customization to level design and music. And yes, music in AS just outstanding, makes you feel yourself indestructible killing machine! I definitely recommend everyone to check this masterpiece.
positive · reviewer's own thumbsView post →First game by Sigma team that I don't like, nice try on making a tower defence, but they ain't good at it. And they are about 10 years late. People who set auto target of towers to the neares enemy - not the closest to the end have special room for them in hell.
negative · reviewer's own thumbsView post →This is one of the better and more interesting TD games. While the graphics aren't the best, unique level designs and their environment difference in each level look cool and story fitting? The so called story is pretty much just info text boxes that you can interact with through map, although there is few story lines in levels... There are different difficulties for each level Easy - Normal - Hard - Expert. The first three difficulties don't really offer much, expert difficulty adds more…
positive · reviewer's own thumbsView post →It's a solid TD game. While I'd recommend a few others first, supposing you have those this one works as you'd expect for the genre and provides a fun challenge. The towers are soldiers with different types of weapons such as shotgun, machinegun, sniper, flame/frost-thrower, etc.. Interestingly you can pick up a handful of different weapons for each, with different tiers for each of those, which make your unit cost a different amount to place. However each can be equipped with 2 weapons, so…
positive · reviewer's own thumbsView post →This Game, makes your schlong bigger!
positive · reviewer's own thumbsView post →The only tower defense game I've ever enjoyed... just get some good music in the background and keep on rollin' baby. Also don't shoot the green ones, they're related to Shrek.
positive · reviewer's own thumbsView post →𝑨𝒍𝒚𝒆𝒏𝒍𝒆𝒓 𝒂𝒓𝒂𝒎𝒊𝒛𝒅𝒂
positive · reviewer's own thumbsView post →It doesn’t drastically change the “passive” tower defense. But Alien Shooter TD adds some fresh elements that inject the genre with interesting new impulses. https://steamcommunity.com/sharedfiles/filedetails/?id=2924216302
positive · reviewer's own thumbsView post →My Video Review is available here: https://youtu.be/pfjoSXHpHuY Is Alien Shooter TD worth your attention? Despite its flaws I would say so. On the plus side are quite complex options on how to improve the skills of your soldiers, a wide variety of upgradable weapons, the ability to carry 3 different weapons by each soldier that can be changed during the game, balanced economic model, 3 levels of difficulty and short but intense missions. On the negative side are shallow story and its…
positive · reviewer's own thumbsView post →It’s great to play a childhood game again after a few years. It never gets old for me. Pretty unique mechanics for a tower defense game such as the ammo mechanic. The survival modes are also definitely worth replaying much like the other Alien Shooter games and it gives me a good reason to empower my arsenal further even after the whole story is finished.
positive · reviewer's own thumbsView post →The ammo mechanic breaks the game. It makes the game about refilling your "towers" instead of buying, upgrading and placing new ones. Uninstalled after few levels.
negative · reviewer's own thumbsView post →Tactical in depth, lots of combinations, pretty satisfing 7/10
positive · reviewer's own thumbsView post →One of the best TD games I ever played. There are various ways to accomplish 100% success. Proud non-user of cryo weapons - never at all except one test run. Most effective weapons for me were shotguns, sniper rifles and plasma. The hardest level was 37 on expert. I flawlessly completed it using 3 cheap shotguns and the rest were maxed uzi guys (I've read this advice in discussions, thanks) at start. First two waves are most difficult and pests' route varies a bit, it affects efficiency, might…
positive · reviewer's own thumbsView post →Cheap rip-off Better play the original 2 games
negative · reviewer's own thumbsView post →A pretty OK game, with OK graphic, with combination of game-play throughout the path you take. And sometime a bit challenging which make it worth it.
positive · reviewer's own thumbsView post →This is a great TD game. See my guide!
positive · reviewer's own thumbsView post →its dumb, its loud, and i love it
positive · reviewer's own thumbsView post →Initially, I was very sceptical about Alien Shooter TD. I though it's just a lazily-made tower defense game out of Alien Shooter 2 assets meant to suck donation money from mobile players. However, in the end... not that I was totally wrong but the game managed to surprise me quite a bit. I rarely play strategy and tower defense games mostly because I had enough of them in my childhood. Nevertheless, Alien Shooter TD managed to get me drawn. To begin with, the gameplay is fun and interesting:…
positive · reviewer's own thumbsView post →you talk about dark souls i talk about alien shooter td you talk about sekiro and nioh i talk about alien shooter td The game has three levels of difficulty at the beginning. After playing on hard expert difficulty unlock.Oh, that bothers me but after that hardcore unlock.I do not recommend playing at all in this difficulty.Has the developer ever played hardcore? Are these levels complete? Or was it just made to annoy gamers?developer, please give us more powerful weapons or more money for…
positive · reviewer's own thumbsView post →for me, who like tower defense games, and is a 2D lover, this is the game I wanted but did not expect from Sigma, who already did some fine work with the Shooter series bringing old school 2D art and great destruction with particle effects, lightning effects, and pretty serious body count. If you like 2D art, if you like tower defense, if you like having thousands and thousands of enemies on screen, this is a game not to miss.
positive · reviewer's own thumbsView post →lovly stoner game,alot of fun for the ones who likes TD games, velkro aproved :D
positive · reviewer's own thumbsView post →A mediocre TD game. In the beginning fun, the alien exploding thing is nice. But in the later game it is too much of a useless grind. And enemy targeting is aweful.
negative · reviewer's own thumbsView post →Thanks for this trash G2A
negative · reviewer's own thumbsView post →Alien Shooter TD successfully transforms the familiar formula of the Alien Shooter franchise into a hybrid experience that combines tower defense mechanics with tactical real-time action. Rather than relying entirely on automated towers, players take command of squads of heavily armed soldiers who can be positioned, upgraded, and equipped to withstand relentless alien invasions. This hands-on approach gives battles a more dynamic feel than traditional tower defense games, as every encounter…
positive · reviewer's own thumbsView post →I would not recommend this game. It is not terrible but it is rough around the edge, and the gamepaly needs some more polish. - I appreciate the devs try something a bit different in the crowded TD genre, unfortunately this atttempt is not so succesful. The reload mechanism is more a distraction than anything else. - Technically the game is pretty good - The biggest issue howver is the very uneven progression and gameplay. Some level might be very hard and the following one very easy.…
negative · reviewer's own thumbsView post →I really wanted to stop playing this game, but I just couldn't. I also thought about putting a review here, but decided to just go play this game some more instead........
positive · reviewer's own thumbsView post →cures deppresion for real, such a nice quality and peaceful game.
positive · reviewer's own thumbsView post →no controller support? fu
negative · reviewer's own thumbsView post →This game is dated 2017 but I have the feeling I have played it or a version of it years earlier... Easy at times, difficult at others. A good steam blower if you want to play one of the numerous endless matches... 7-8/10 Not really trying to do anything game changing but a solid entry into TD genre.
positive · reviewer's own thumbsView post →(review em Português no final) (English) Alien Shooter TD is an exciting tower defense game that combines strategic gameplay with fast-paced action set in a sci-fi universe. Players must defend against waves of alien invaders by strategically placing towers and deploying various units equipped with unique abilities. The game features a wide range of towers and upgrades, allowing for diverse strategies and customization to adapt to the increasingly challenging waves. The graphics are…
positive · reviewer's own thumbsView post →На очередном ТДшном безрыбье - сойдёт. Вынужден спойлернуть для вашей пользы: игру нужно заспидранить на минимальной сложности, чтобы был доступен полный набор персонажей и др. 3/10
positive · reviewer's own thumbsView post →Interesting as a concept, horrible execution. As my first Alien Shooter game, this really left a bad taste in my mouth. The reload mechanic isn't as cool or tactical as one would think and is only really an issue in the early part of the game and start of a map. Could remove it and it would honestly feel the same, if not better. Even with the Auto reload mechanic, It still just feels slapped on as a "cool" feature. As stated earlier, once you get far enough in the game, you get Energy units…
negative · reviewer's own thumbsView post →Nice TD game with a twist, 8/10. You can recruit up to 4 soldiers (out of 7), need to find better weapons, can upgrade them... what makes this TD quite unique is the gun mechanics, you need to make sure that your soldiers have enough ammunition, otherwise they cant do anything... its a constant gamble finding the right balance between new soldiers on the field, reloading ammunition, or even using one of the better, but more expensive weapons... There are 40 missions, each with 3 stars, and an…
positive · reviewer's own thumbsView post →Kind of like a P2W but with the P2W taken out, Id reccomend you grind up for the last guy, then never sell your first gun unlocks (this directly relates to the cost of the character) then add the highest level gun you have to the homies loadout, and put down a few dudes then max em out and have a blast, you gotta manage all these resources and factors. GG WP. *Bit of a grind but thats okay for this kind of game, its more "content"
positive · reviewer's own thumbsView post →Shoot aliens galore
positive · reviewer's own thumbsView post →Decent tower defense. Just like the phone game on the Play Store only no cash shop. Instead cash shop items are all bought at decent prices with game currency. Kill aliens! Set your troops up like towers. Upgrade their skills and weapons over time. Challenging levels and endless modes. Decent graphics, does not very from the phone. Dead bodies stack on top of each other. See how far you can go!
positive · reviewer's own thumbsView post →Very interesting Tower Defence game with something new to add to the table then others Might as well get to it then PROS: Good sound design Alright gameplay Unique tower looks Runs well Simple gameplay CONS: Some gameplay stuff ends up not doing much Some towers are awful and for a small tower list it's a major problem Grindy FINAL NOTES: I Recommend this only if you get it on sale. It's fun and good but for 11 bucks i'll rather spend that on a good game sale them this for full price but…
positive · reviewer's own thumbsView post →One of the best tower defense games I've played. I recommend keeping auto-reload off, because it's more tactical to individually choose when they reload, it makes a huge difference. Also, once your guys are pretty strong you can make a lot of cash just grinding the first endless mode. Also in my experience the best unit is the light energy soldier - you can build 4 of them where a heavy soldier would take 1 space. I think just using the single-space units gives higher DPS overall, and more…
positive · reviewer's own thumbsView post →If you like Alien Shooter series and you like Tower Defense games, then this game is perfect for you!
positive · reviewer's own thumbsView post →Yes, A lot of fun, kind of challenging and definatelly a game to play to enjoy your time.
positive · reviewer's own thumbsView post →Must be the most fun I have had in a Tower Defense! Only sad there are no DLC's available or further games from Sigma in this genre.
positive · reviewer's own thumbsView post →I love Sigma Team games. They may not bank on visuals coz they have no fancy ray tracing, in fact they aren't even 3D, but man they are fun to play. If you want some fun carnage, games from Sigma Team are what you want. And I never thought there might be a way how to make their games even better, but they did it! It's same good old symmetrical top down shooter, but blended with my other favorite mode, Tower Defense. Instead of running around, you're strategically placing your soldiers that then…
positive · reviewer's own thumbsView post →The graphics are cool. That's it for the positive part of this review. The gameplay is the same as other cookie cutter tower defense games. Nothing wrong with that if the levels involved any kind of strategy. They barely do. For complete tower defense newbies it might be interesting for a few levels but you'll figure it out soon enough. The game has issues with balancing difficulty as well. Most levels are a snoozefest and then once in a while you'll encounter one that spikes the difficulty.…
negative · reviewer's own thumbsView post →Fun tower defense spin-off on the Alien Shooter series, it starts fun and has plenty of new monsters and units thrown in regularly to make it interesting whereas late/end game is just really poor and consists of same meta, otherwise it's near impossible to finish. Had some grind to it as you level up your units and weapon drops, fairly fun but also difficult to 100%.
positive · reviewer's own thumbsView post →Only a little over two hours in, and I already feel ready to write a review. I am having a blast. This is real tower defense, which is nice considering how often that term is tacked on to anything with a tower somewhere in it. There is no pathing, at least not yet and I doubt there will be, but that is no deal breaker for me. The core of the game is you have seven types of soldiers (though you have to pay to open up everything but the first) and each type has a small skill tree, maybe six…
positive · reviewer's own thumbsView post →I rate this a solid meh out of 10. You can upgrade weapons (only stats though) and soldiers, there are loot boxes you buy with ingame currency, and that's about it. You place your soldiers and wait for the level to be done. I only 100%ed it because it lets me watch movies on my second monitor. If you're looking for an engaging game, this is not it. But since there is no neutral review on steam and because it was ok enough to be 100%ed Ill give this a thumbs up.
positive · reviewer's own thumbsView post →Score : 8.0/10.0 ♥
positive · reviewer's own thumbsView post →8 bucks ? not thanks. if u get the game for like 1€ its fine. if you are a td fan, u may enjoy the game the 1st 10-20 hours, but thats it. it's very monotonous and the grind isn't fun at all.
negative · reviewer's own thumbsView post →This is a very good Tower Defense game with the Alien Shooter game engine. You defend the path with different weapon specialized soldiers. They all have small skill tree to upgrade. You earn money what can spend on lockboxes for random weapons, there is plenty. You need manage their bullets as it drain on fight. There is 40 map with several difficulty setting and 8 endless map. If you like TD games then I highly recommend this very good one!
positive · reviewer's own thumbsView post →Alien shooter it's a a fun game, to play when you dont have a lot of time to invest. If you buy it at reduced price it's ven bettert.
positive · reviewer's own thumbsView post →7.5/10 Good indie TD game. Instead of "towers" you have "troops" which you can upgrade to use different weapons. The main nuance of the game is that your "towers" have ammo so you need to manage that in addition to killing baddies. Thankfully along the way the devs added in auto-reload so some of the earlier negative reviews can be safely ignored. Two main complaints from getting a higher score.. 1) Loot boxes - when you beat missions/save up game currency you can buy loot boxes to get…
positive · reviewer's own thumbsView post →Extremely fun! Looking forward to seeing the next episode.
positive · reviewer's own thumbsView post →its a good game to kill time during this stay home period.
positive · reviewer's own thumbsView post →
Posts are quoted from public profiles with links to the original. Want yours removed? Contact us.
You Might Also Like
similar titlesFINAL FANTASY VII REBIRTH
FINAL FANTASY VII REBIRTH
Game
Little Kitty, Big City
Little Kitty, Big City
Game
What Remains of Edith Finch
What Remains of Edith Finch
Game
Teenage Mutant Ninja Turtles: Splintered Fate
Teenage Mutant Ninja Turtles: Splintered Fate
Game
I Was a Teenage Exocolonist
I Was a Teenage Exocolonist
Game