One Boss One Fight

Boss-focused action roguelite with shifting patterns and persistent progression

mrTodo · Released Nov 28, 2024

Reviews: Mostly Positive; 79% of 33
Recent reviews: Not enough recent
Playing now: 0; right now
Steam Deck: Playable
Last update: 4 months ago; May 2, 2026

Free demo available, 0 playing it now: get the demo.

What is One Boss One Fight?

This single-player action roguelite lets you choose among multiple heroes for runs centered on multi-phase boss fights in a dark fantasy world. You manage movement, positioning, and timing while shaping builds with abilities and blessings from Viking gods; expeditions unlock more bosses, challenges, and power combinations.

For you if...

+you prefer demanding, boss-focused combat over clearing weak enemies
+you enjoy shaping different builds across repeated roguelite runs
+you want single-player action with full controller support

Not for you if...

−you prefer relaxed combat that rarely punishes mistakes
−you want cooperative or competitive multiplayer modes
−you dislike runs built around repeated boss encounters

Screenshots and trailer

One Boss One Fight system requirements

As published by the developer.

Minimum

OS: Windows 10
Processor: 2.0 Ghz
Graphics: Nvidia GTX 970
Memory: 2 GB RAM
Storage: 4 GB available space
DirectX: Version 11

PC version details

DRM, required accounts, controller support and Steam features.

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 12
Steam features: Cloud saves, Family Sharing

Steam Deck: Playable

Some text entry requires manually opening the on-screen keyboard
Some in-game text is small and may be hard to read
All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
Default graphics settings perform well on Steam Deck

Multiplayer and co-op

Single-player

Languages

Full audio: English. Text only: French, Italian, German, Spanish - Spain, Arabic, Bulgarian, Czech, Danish, Dutch, Finnish, Greek, Hungarian, Indonesian, Japanese, Korean, Norwegian, Polish, Portuguese - Portugal, Romanian, Russian, Simplified Chinese, Swedish, Thai, Turkish, Ukrainian, Vietnamese, Portuguese - Brazil, Spanish - Latin America.