Games like Tower o-ven
Games like Tower o-ven include Vampire Survivors, The Binding of Isaac: Rebirth, Skul: The Hero Slayer, BlazBlue Entropy Effect, and Dead Cells. We matched them by the tags players give Tower o-ven on Steam (Casual, 2D Platformer, Action, Action Roguelike, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Pixel Graphics · Casual

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Pixel Graphics · Replay Value

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

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · Pixel Graphics

Dead Cells
Shared: Action Roguelike · Pixel Graphics · Replay Value

SANABI
Shared: Action · Pixel Graphics · 2D Platformer

Downwell
Shared: Action Roguelike · Pixel Graphics · 2D Platformer

Celeste
Shared: Pixel Graphics · 2D Platformer · Singleplayer

Hades
Shared: Action Roguelike · Action · Singleplayer

Katana ZERO
Shared: Action · Pixel Graphics · 2D Platformer

Sonic Origins
Shared: 2D Platformer · Action · Casual

Megabonk
Shared: Action Roguelike · Action · Singleplayer

Caveblazers
Shared: Action Roguelike · Pixel Graphics · 2D Platformer

Super Meat Boy
Shared: 2D Platformer · Pixel Graphics · Singleplayer

Rogue Legacy
Shared: Action Roguelike · Action · Singleplayer

Planet of Lana
Shared: Action · 2D Platformer · Singleplayer

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

Pizza Tower
Shared: 2D Platformer · Pixel Graphics · Action

Death Must Die
Shared: Action Roguelike · Pixel Graphics · Action

Brawlhalla
Shared: 2D Platformer · Casual · Action

Dungreed
Shared: Action Roguelike · Pixel Graphics · Action

Gensokyo Night Festival
Shared: Action · Casual · Pixel Graphics

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

Gravity Circuit
Shared: Action · Pixel Graphics · 2D Platformer