Cosmo Rider is a physics based roguelite bullet-hell-and-heaven horde-survivor action game. Upgrade your spaceship and traverse procedurally generated galaxies in this space survivors game. It has Native Linux support but no Steam Deck rating from Valve yet.
Recently it had a major upgrade to bring in randomized weapon attributes, and a new reinforcements system to help you out which sounds pretty fun. That was on top of a graphics upgrade back in April. They also recently added in key rebinds, along with better detection for Steam Deck controls, an updated tutorial, improved UI navigation and more.
Most recent trailer is below:
Direct Link
Looks like a whole lot of fun if you like space shooters, along with survivor-like gameplay too.
Check it out on the Steam page.
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