Games like Cosmic Waves
Games like Cosmic Waves include Nova Drift, BALL x PIT, Vampire Survivors, Teardown, and Megabonk. We matched them by the tags players give Cosmic Waves on Steam (Arcade, Shoot 'Em Up, Roguelite, Pinball, and Destruction): closest matches first, and among equally close ones the better-known games.

Nova Drift
Shared: Shoot 'Em Up · Arcade · Roguelite

BALL x PIT
Shared: Arcade · Roguelite · Shoot 'Em Up

Vampire Survivors
Shared: Roguelite · Arcade · Singleplayer

Teardown
Shared: Destruction · Physics · Singleplayer

Megabonk
Shared: Roguelite · Arcade · Indie

Rogue Legacy 2
Shared: Arcade · Roguelite · Action

Zombie Rollerz: Pinball Heroes
Shared: Pinball · Roguelite · Shoot 'Em Up

Clownfield 2042
Shared: Arcade · Shoot 'Em Up · Action

Octogeddon
Shared: Shoot 'Em Up · Roguelite · Action

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Arcade · Action

Hardspace: Shipbreaker
Shared: Sci-fi · Destruction · Physics

Wreckfest
Shared: Destruction · Physics · Arcade

Blast-off
Shared: Arcade · Shoot 'Em Up · Action

Ikaruga
Shared: Shoot 'Em Up · Arcade · Sci-fi

Hades
Shared: Roguelite · Action · Singleplayer

Star Saviors
Shared: Shoot 'Em Up · Arcade · Action

Greedland
Shared: Shoot 'Em Up · Roguelite · Sci-fi

XENOTILT: HOSTILE PINBALL ACTION
Shared: Arcade · Pinball · Shoot 'Em Up

SNKRX
Shared: Roguelite · Shoot 'Em Up · Arcade

Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Action

EVERSPACE™
Shared: Roguelite · Sci-fi · Action

Cube Destroyer
Shared: Shoot 'Em Up · Arcade · Destruction

Instruments of Destruction
Shared: Destruction · Physics · Arcade

Cyberhunt
Shared: Shoot 'Em Up · Arcade · Action