Last 7 days
Screenshots, achievements, specs, every price change and sale we've seen on Steam, and trading cards.
Loading from Steam…
Steam prices for United States (change the country in the top bar), and Steam keys from authorized stores.
Checking other stores…
Loading from Steam…
100% positive of 13 · Positive · Live from Steam
Loading reviews from Steam…
Free on Steam. The demo has its own app, so its players are counted separately.
A bullet hell with its own set of mechanics and unique bosses. Gameplay oriented and retro themed. Complete with spine-tingling music.
Live data from Steam, tracked by SteamPlayerBase.
No authorized Steam key store lists this game right now.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 100% on 2026-11-01 → 100% today (13 reviews)
Not tested by Valve yet. Results from Valve's own testing.
Valve hasn't published test details for this game.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Fixed a crash in the demo when losing to the boss during the laser attack.
The haunted skulls used to give coins when destroyed during boss fights. This is no longer the case. This won't invalidate your high scores, just consider yourselves lucky.
Fixed two other challenge boss attacks with challenge level 3 and made them easier and more fair.
One of the boss attacks was too difficult so I made it easier. It's one of the challenge bosses.
Now screen resolutions where the vertical resolution is larger than the horizontal resolution will be supported.
Replaced the Training Mode with a Tutorial. The 'Training Mode' teaches all of the controls and what certain items are for. More boss Animations are added to give them more expressions.
The soundtrack contains more than 90 songs. Has both the modern and 8-bit versions.
After receiving feedback from players, I have agreed to add some important changes to the gameplay. Items now home in on the player when they get close after about a half-second of spawning. A sound is played when an enemy carrying a tome enters the screen. Th…
Added a walkthrough for guiding players through finishing the game. Tells you how to beat story mode on easy and hard difficulty, and how to complete all the challenge levels and unlock all the cards. Also teaches you how to get most of the achievements, revea…
For the longest time, A2 Zygon used a fixed timestep of 60 FPS. This meant that when the game ran slower, gameplay time also ran slower, making the game easier when it shouldn't be. This is now fixed. This is the last major fix before the game's final release …