Games like Botwave
Games like Botwave include BALL x PIT, Vampire Survivors, 20 Minutes Till Dawn, Halls of Torment, and Nova Drift. We matched them by the tags players give Botwave on Steam (Action, Roguelite, Bullet Hell, Shoot 'Em Up, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.
BALL x PIT
Shared: Action · Roguelite · Bullet Hell
Vampire Survivors
Shared: Roguelite · Bullet Hell · Pixel Graphics
20 Minutes Till Dawn
Shared: Bullet Hell · Roguelite · Shoot 'Em Up
Halls of Torment
Shared: Roguelite · Bullet Hell · Action
Nova Drift
Shared: Roguelite · Bullet Hell · Shoot 'Em Up
Megabonk
Shared: Roguelite · Bullet Hell · Action
Death Must Die
Shared: Roguelite · Bullet Hell · Action
Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Action
Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Bullet Hell
Star of Providence
Shared: Roguelite · Bullet Hell · Shoot 'Em Up
Cyberhunt
Shared: Action · Shoot 'Em Up · Arcade
Deep Rock Galactic: Survivor
Shared: Roguelite · Bullet Hell · Top-Down Shooter
LUFTRAUSERS
Shared: Bullet Hell · Action · Arcade
Nuclear Throne
Shared: Action · Bullet Hell · Roguelite
Boneraiser Minions
Shared: Bullet Hell · Roguelite · Pixel Graphics
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Rocket Rats
Shared: Bullet Hell · Roguelite · Action
I Am Legion: Stand Survivors
Shared: Roguelite · Bullet Hell · Shoot 'Em Up
SNKRX
Shared: Roguelite · Shoot 'Em Up · Top-Down Shooter
ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Action
UBERMOSH
Shared: Action · Pixel Graphics · Arcade
SYNTHETIK: Legion Rising
Shared: Roguelite · Action · Top-Down Shooter
Skul: The Hero Slayer
Shared: Action · Roguelite · Pixel Graphics
DoDonPachi Resurrection
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter