Game2016

Aegis of Earth: Protonovus Assault

Strategy

Developer ACQUIRE Corp.

Aegis of Earth: Protonovus Assault (絶対迎撃ウォーズ, Zettai Geigeki Wars: Metropolis Defenders) is a 2015 real-time tactics video game developed and published by Acquire in Japan, with a western release by Aksys Games (North America) and PQube (Europe) coming the following year. From Wikipedia (CC BY-SA 4.0)

39 reactions from 1 source (Steam reviews) · newest Jul 6, 2026 · last updated Oct 8, 2026 · How this works

Audience score

64
Fresh

25 positive · 14 negative
95% range 48–77%

Source+−=
Steam reviews25140
Steam's own rating
Mixed
43 of 68 reviews positive (all languages, per Valve)

What people are saying

Summary pending — the reactions are listed below.

Reactions

39 of 39 · most liked first
  • Steam user Steam user …5063Steam reviews · Jul 19, 2016 · 4 h played

    Before you buy, this is my impression of the game. You have to manually set the buttons on the configuration menu at the game launcher for your coresponding controller. Also, somehow the game won't even detect left and right trigger button for Xbox One controller. No mouse support, playing with keyboard only is a chore for this game. Don't even bother to buy this game if you don't have or don't want to play with controller only. Frequent crash to desktop on Windows 10, I don't know for the…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …1434Steam reviews · Aug 19, 2016 · 3 h played

    Well, it's a terrible port, I think it's a port. But it's actually a really good Tower Defence game with a lot of heart and personality. Oh dear. This one is going to be tricky. If it were not for the fact that this game has been ported in such a way that it makes No Man's Sky look competent (and that's a really low bar to set), this would be getting praise from me as possibly the sleeper Tower Defence hit of 2016, it's really "that" good. There's a genuinely brilliant twist on the TD genre…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …7551Steam reviews · Jul 19, 2016 · 1 h played

    DONT BUY THIS IF YOU HATE THE FOLLOWING haven't played much so im just gonna list the things that is annoying, -NO MOUSE SUPPORT, EITHER KEYBOARD OR CONTROLLER! -EVEN with controller u have to custom map them -NPC is not fully voice, some speak their entire line, some just speak the first few word and shut up for you to read the rest, this is very annoying for me -very limited camera angling. U spin around ur city, zoom in or out, thats it. no elevation or angle. ANNOYING WILL RECOMMEND FOR…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …8927Steam reviews · Oct 20, 2019 · 3 h played

    Good game abandoned by developers. Fix the ♥♥♥♥♥♥♥♥ Achievements, you mofos.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …8660Steam reviews · Sep 9, 2016 · 20 h played

    I love this game, it's a great and fun spin on tower defense and it kills me to have to leave it negative review, however Aksys leaves me little choice. They have a dead/unmonitored fake customer support email that as of this review has been nearly 1 and a half months since I requested help and if they were aware of the PC issues of this port,to get absolutely no response whatsoever. I contacted Steam to get a try to flush your cache etc. did all that still no fix, steams final answer, "we…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …6697Steam reviews · Jul 21, 2016 · 10 h played

    My conclusion: good game while not properly implanted onto pc. Just one example: there's NOT an 'official' way to exit the game after you start it. No button inside menu nor a dialogue box. So the only way to end the game is to save it first in the 'setting' menu then press alt+f4. It's pretty a new eastern method even for me, a Chinese. But still a good game, especially the designing, which combines the TD strategy with the reaction-test elements(you have to rotate the different circle of…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …9473Steam reviews · Jan 14, 2021 · 1 h played

    It's a interesting take on a tower defense game, and as much as I want to like it their are two 'big' things that kinda prevent that. One, achievements are broke... And have been ever since release, apparently. Two, the really big one here... The devs kinda forgot to add in a 'exit game' button so you have to tab out and close the game from either the taskbar or task manager, whichever you prefer. Minor complaints are garbage keyboard controls, and the mouse being pretty useless even in…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …7304Steam reviews · May 2, 2019 · 2 h played

    I had potential, but the achievements don't work and based on what I read in the discussion, Aksys basically slapped the game up, did nothing to improve or change it, and ignores complaints. I admit, besides the only technical issue I personally had was that there's no exit button, but the game has a generally unpolished feeling to me and neither Aksys nor the developer have touched it in three years, so I refunded it. If you can overlook the issues, it's okay.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …0192Steam reviews · Dec 4, 2021

    If you buy this, make sure to try it right away. It might not even run at all... Black screen simulater~ If I EVER find a way to make this game run, I might change the review, but for now... 20ish bucks for a Black screen is not worth it.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …6152Steam reviews · Mar 15, 2020 · 1 h played

    It's an ENTER smashing simulator with a lot of unneeded text and characters but the actual defense is fun and the anime theme is great! If 80% of the talking was actually worth reading I would enjoy reading them! It's too cliche though. PS. Do yourself a favor and after you get the hang of it change the difficulty to Hard. Sadly no more rewards, (that I notice), but more action, else the city defends it self. Only after you unlock all characters it gets challenging and you can turn back to…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7916Steam reviews · Feb 22, 2020 · 22 h played

    The game seems to have a good premise and I was interested in playing more- but the controls are terrible. This seems to be a decent game with a terrible port to the pc. Update after having played it some more: There is some good in this game, even with the terrible pc controls. (achievements are also broken) If you're going to play this game, use a controller. The game itself has just about no story and the characters in the game never develop. The gameplay is easily the only reason to play…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …1170Steam reviews · Jul 7, 2019 · 3 h played

    I really nice mix of Tower Defense and City Management with a cool gimmick during strikes, if you can look past the technical problems like no exit button and achievements seemingly not working then I'd say it would be a good game to pick up on sale.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …1524Steam reviews · Jul 24, 2016 · 9 h played

    TL;DR: slow paced but gradualy exciting anime like and interesting tower defense concept. It's a interesting tower defense concept and it really gives that "Defend the Earth!" anime vibe. The first time a boss showed up I got really excited, it almost makes me fell like I'm inside one of those giant robot against giant monster anime, but using a city instead of a robot. But, just like anime goes, there is as much talking as there is fighting. The beginning of the game is really slow with all…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5344Steam reviews · Dec 8, 2019 · 16 h played

    Good game but bloody awful port and barely even considered a rip or copy/paste of the original. To start off things achievements don't seem to work or function so if you place any substance in achievement hunting then just skip this game. Secondly unless you have a controller or just don't like using a controller then this will be basically a deal breaker as there is no mouse support and using the keyboard for the game is a tiring lesson in frustration so you will be forced to use a…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …1308Steam reviews · Aug 24, 2016

    The game will not boot up. When I try to run the game all I get is a black screan any ideas?

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …7148Steam reviews · Jul 24, 2016 · 3 h played

    Even with controler problems, it's a good and exciting game.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …0135Steam reviews · Dec 17, 2022 · 39 h played

    Great game for the Steam Deck, just takes a little fiddling to get working. (For those wondering, switch to desktop mode, open the game, at the launcher uncheck the windowed box and set the graphical level to Fantastic then launch the game. Once you're in then quit and go back to game mode. From Game Mode launch the game like normal, click on the touch screen to hit play and run the game from there. To exit the game you have to force close it after saving, press the Steam button + B and hold…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4354Steam reviews · Nov 19, 2022 · 24 h played

    Finished the game, it's pretty okay, the concept is nice even if a bit simplistic. I just wish they had spent 10% of the budget they put into useless cringe English dub to instead fix the port.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …1728Steam reviews · Jan 3, 2018 · 4 h played

    when sim city meet kingdom rush, yup this is it. I have pretty much fun paling this game, not only train your HANDS reflexes, but also how to manage a post-apocalyptic cities (CITIES NOT CITY) like happiness and population, but also how to formulate strategy like what's the best place to put your tower or what kind of building that you have to build or upgrade. So, i'll tell you guys about my opinion. pro: 1. sim city + kingdom rush = aegis of earth (city building + tower defense = out of the…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …2602Steam reviews · May 4, 2021 · 6 h played

    Got this on sale, beyond that broken porting mass it's solid gameplay with wifu in it. Pros - Unique TD gameplay (as far as I know) you don't build and let's thing play on its own, it has some micromanaging which is engaging. - A mixed between city building and tower defense - Has a lot of building Variety. Cons - Long introduction and game won't let you go to setting until mission one which is quite annoying. - Abysmal keyboard support they even bother to include mouse control, controller is…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4233Steam reviews · Apr 27, 2021 · 3 h played

    While there is not too much too this game being just tower defense and some light story, I would still recommend it. Mainly for the likable characters decent writing, good tower defense, and the fact that I just flat out had fun playing it. Is it worth $20? Ehh.. but I got it on sale with my Humble discount.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …8038Steam reviews · Jun 21, 2020 · 4 h played

    Fun and creative tower defense game, but its a bit messy to play with a keyboard and mouse. The controls are much easier with a game controller. Achievements are also not working as intended as of this date.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …8434Steam reviews · Jun 3, 2024 · 6 h played

    Part of the Backlog Series Finished it: No Liked it: Hell no played on: Normal This games does not value my time. While the game itself is a pretty nice concept on the tower defense genre with some neat mechanics and forcing you to plan well ahead for some things, everything takes just so ♥♥♥♥♥♥♥ long. theres a cutscene whenever you enter or exit a battle, and while the entry one is skippable, the exit one isnt because theres text happening on screen which is always "Strike Progress…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …5205Steam reviews · Dec 15, 2020 · 36 h played

    It's an OK game. With a good sale (75% off) and a controller, I can recommend. The game is a tower defense game with a bit of city building element to it, by making you plan for configurations you can use during waves of enemy invasion. There is a linear and almost boring story line, but I enjoy the not so serious attitude. Overall a good time killer.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …9398Steam reviews · Feb 8, 2020 · 10 h played

    Wow! That got me hooked! Despite the achievements not working, I find it a pretty good game. It's not the usual Tower Defense game but the progression feeling is there. Adding new cities to defend, changing operator to get them some rest. Ok stories. That got my thumbs up

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4143Steam reviews · Dec 2, 2019 · 3 h played

    I have owned this game for awhile and love tower defense genre. I was very surprised at this game as it takes it to whole new level. The characters in this game are very comical and interesting. This literally puts the story into the tower defense genres with great anime styled graphics and intense boss battles.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …9148Steam reviews · Oct 30, 2017 · 34 h played

    Wow, just WOW. This game is somewhat of a hidden gem in my opinion. Aegis of Earth is a tower defense game originally made on the PS2. And rereleased onto Steam. I never played the original so I can't render an opinion on it, but overall I would assume nothing has changed. The entire point of the game is to defend your cities from these giant creatures called the Protonovus, but everyone just calls them 'the enemy'. As the game progresses you get more cities and more command units to…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …1442Steam reviews · Nov 29, 2016 · 2 h played

    decent game with some controller/keyboard issues

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4582Steam reviews · Jul 6, 2026

    This is a fun game, on the PS4. This port is botched to the point it should be delisted since the devs abandoned it, good luck if you can even get running, let alone having to set up a working controller for it. Not worth the purchase for the headache.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …3124Steam reviews · May 9, 2026 · 29 h played

    It's a simple tower defense game. There's no romance or Alternate Endings. Update: I've now fully completed Aegis of Earth to the credits, all 23 chapters. The game 99.9% works...except for the achievements. I played with a controller on Windows 11. It worked perfectly. Didn't have to set any key binds. It did not crash at all in my entire live stream, over the course of four days. Edit: Interestingly enough they, fixed one of the minor bugs with this game! On the PS3 version, when clearing…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …3106Steam reviews · Mar 26, 2026

    A lot of talking and no action. Achievements don't work and the game seems long abandoned.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …6818Steam reviews · Jul 3, 2025 · 12 h played

    It's fun, with great characters too.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7384Steam reviews · Feb 19, 2025 · 4 h played

    Great game but achievements broken controls have be set and can be buggy in my experience i love the actual game shame about abandoning it

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …9460Steam reviews · Dec 31, 2024 · 4 h played

    defend your city with artillery against kaiju like monsters and lead your team to victory.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4165Steam reviews · Jul 25, 2024 · 13 h played

    It's a great game but until this point I gave up that this will have update. Achievements are broken. Just buy the game during sale season

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …4112Steam reviews · Dec 29, 2022 · 33 h played

    Game is meh, no achievement ...

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …5224Steam reviews · Jun 4, 2020 · 15 h played

    Great and unique game. Perfect scenario. Awesome musics. I do recommend. I think i am keen on this game.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …3728Steam reviews · Feb 23, 2018 · 1 h played

    Its good for quick fun. It practices eye and hand coordination in a weird way compared to other games. You can also refer to it as "moving tower defense" game.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …2621Steam reviews · Apr 28, 2017 · 5 h played

    so i've just spent 2 and a half hours on this game and i have to say it is a sold game very enjoyable at that the biggest problems i've seen are due to a bad pc port but i don't think these issues affect the gameplay that much.

    positive · reviewer's own thumbsView post →

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