Lethal Dungeon

Roguelike card battles where you defeat every enemy in one turn

Nihohe Soft · Released Feb 19, 2026

Reviews: Very Positive; 96% of 298
Recent reviews: Not enough recent
Players: 6; daily peak, Oct 28, 2026
Steam Deck: Playable
Last update on Steam: 4 months ago; Jun 4, 2026
Minimum PC: 8 GB RAM; Full requirements

What is Lethal Dungeon?

A single-player, 2D card game set in a dungeon. Across repeated runs, you fight using your opening hand, earn larger rewards for playing fewer cards, and spend money on deck upgrades or shuffling and drawing when stuck.

For you if...

+you prefer short runs to lengthy dungeon expeditions

Not for you if...

−you prefer real-time action to turn-based card puzzles

What players say

96% of 298 reviews are positive

Players praise the depth of card combinations, especially with later decks. Some players wish there were more content.

Screenshots and trailer

Lethal Dungeon system requirements

Minimum: 8 GB RAM.

As published by the developer.

Can my PC run Lethal Dungeon?

The published requirements do not name a graphics card we can compare.

Set up my PC →

Minimum

OS: Windows 10
Memory: 8 GB RAM

Does Lethal Dungeon have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Lethal Dungeon run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

Sometimes shows mouse, keyboard or non-Deck controller icons
Some in-game text is small and may be hard to read
All functionality is accessible with the default controller configuration
Default graphics settings perform well on Steam Deck

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 6
Steam features: Cloud saves, Family Sharing
Languages: Text only: English, Simplified Chinese, Japanese.

Does Lethal Dungeon use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam