59%Good matchPolygon Attack
89%23389% positive reviews, Very Positive across 233 reviews·Space · Arcade
—Jump and shoot in this 2D platformer to destroy the hivemind controlling the aliens that are attacking Earth. Hopefully nothing goes wrong on this mission...
Cosmic Rays
SteamEarth is under attack by a group of aliens controlled by a hivemind. If we destroy that, then the aliens will leave and Earth will be safe, right?

Cosmic Rays is a 2D platformer where you jump and shoot enemies and dodge their own attacks. Inspired by classic platformers from the 80s and 90s like Mega Man.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
All matches
Finding similar games…
Polygon AttackShares Bullet Hell · Shooter · Space , adds Shoot 'Em Up89% · 233 positive reviews59%Good match—
ESCHATOSShares Bullet Hell · Shooter , adds Shoot 'Em Up97% · 255 positive reviews58%Good match—
Let Them Come OnslaughtShares Bullet Hell · PvE · Sci-fi , adds Action Roguelike90% · 241 positive reviews58%Good match—
Alien Hominid InvasionShares Platformer · Side Scroller · PvE , adds Community tag: Online Co-Op88% · 2k positive reviews57%Good match—
RIVEShares 2D Platformer · Retro · Bullet Hell , adds Shoot 'Em Up84% · 440 positive reviews57%Good match—
Really Big SkyShares Retro · Bullet Hell · Side Scroller , adds Shoot 'Em Up73% · 219 positive reviews57%Good match—All matches
The best games like Cosmic Rays are Polygon Attack, ESCHATOS, Let Them Come Onslaught, Alien Hominid Invasion, and RIVE.
Match on: filter matches for Cosmic Rays by tag