Games like Tenvader
Games like Tenvader include Vampire Survivors, BALL x PIT, Enter the Gungeon, Skul: The Hero Slayer, and Nuclear Throne. We matched them by the tags players give Tenvader on Steam (Action, Action Roguelike, Beat 'em up, Puzzle, and Roguelike): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

BALL x PIT
Shared: Action · Action Roguelike · Roguelike

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Roguelike

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Roguelike

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

Megabonk
Shared: Action Roguelike · Roguelike · Action

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Indie

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Action

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Death Must Die
Shared: Action Roguelike · Bullet Hell · Action

Dungreed
Shared: Action Roguelike · Action · Roguelike

Realm of the Mad God Exalt
Shared: Roguelike · Action Roguelike · Bullet Hell

Star of Providence
Shared: Action Roguelike · Bullet Hell · Action

Risk of Rain (2013)
Shared: Action Roguelike · Action · Roguelike

Brotato
Shared: Action Roguelike · Roguelike · Bullet Hell

Dead Cells
Shared: Action Roguelike · Roguelike · 2D

Rogue Legacy
Shared: Action Roguelike · Action · Roguelike

Hades
Shared: Action Roguelike · Action · Roguelike

Nova Drift
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

I Am Legion: Stand Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Voidigo
Shared: Action Roguelike · Roguelike · Bullet Hell

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Action

Atomicrops
Shared: Action · Roguelike · Action Roguelike

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Action · Bullet Hell