Games like Ionhaven: Battery Heist
Games like Ionhaven: Battery Heist include The Binding of Isaac, Hades, Skul: The Hero Slayer, Vampire Survivors, and The Binding of Isaac: Rebirth. We matched them by the tags players give Ionhaven: Battery Heist on Steam (Action, Action Roguelike, Roguelike, Roguelite, and 2D): closest matches first, and among equally close ones the better-known games.

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

Hades
Shared: Action Roguelike · Roguelite · Action

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

Vampire Survivors
Shared: Action Roguelike · Roguelite · 2D

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · 2D

暖雪 Warm Snow
Shared: Action Roguelike · Roguelite · Roguelike

Megabonk
Shared: Action Roguelike · Roguelike · Roguelite

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Action

Hades II
Shared: Action · Roguelike · Roguelite

Dead Cells
Shared: Roguelike · Action Roguelike · 2D

BALL x PIT
Shared: Action · Roguelite · Roguelike

Halls of Torment
Shared: Action Roguelike · Roguelite · Roguelike

Death Must Die
Shared: Action Roguelike · Roguelite · Action

Dungreed
Shared: Action Roguelike · Roguelike · Action

Sephiria
Shared: Action Roguelike · Roguelike · Roguelite

Ravenswatch
Shared: Roguelike · Action Roguelike · Action

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

Rogue Legacy
Shared: Roguelike · Action Roguelike · Action

Heat Signature
Shared: Action · Roguelike · Top-Down

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Action

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Roguelite · Roguelike

Streets of Rogue
Shared: Action Roguelike · Roguelite · Action

Gunfire Reborn
Shared: Roguelike · Roguelite · Action

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