NightMare King

A roguelike bullet hell shooter with automatic fire and equipment builds

Starmoon Cat · Released Oct 27, 2025

Reviews: Mostly Positive; 77% of 66
Recent reviews: Not enough recent
Players: 5; daily peak, Oct 28, 2026
Steam Deck: Playable
Last update on Steam: 11 months ago; Nov 21, 2025
Minimum PC: 128MB; 4 GB RAM · 0.5 GB disk; Full requirements

What is NightMare King?

This single-player pixel-art shooter sends your chosen hero into dream arenas to become the Nightmare King. You maneuver around monsters and collect coins, experience, and healing apples across twenty-wave runs, buying weapons and gear between waves.

For you if...

+you enjoy weighing equipment bonuses against their drawbacks
+you prefer short sessions with adjustable difficulty

Not for you if...

−you want cooperative play rather than solo survival
−you prefer aiming and firing each shot yourself

What players say

77% of 66 reviews are positive

Players praise the combat, character and item variety, and speed-up option. Complaints include a lack of updates and uneven difficulty. A recent reviewer also criticizes stat progression for limiting viable weapon choices.

Screenshots and trailer

NightMare King system requirements

Minimum: 128MB, 4 GB RAM, 0.5 GB of disk space.

As published by the developer.

Can my PC run NightMare King?

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Minimum

OS: Windows 10
Processor: 2 Ghz
Graphics: 128MB, OpenGL 3+
Memory: 4 GB RAM
Storage: 500 MB available space

Does NightMare King have co-op or multiplayer?

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

Single-player

Does NightMare King run on Steam Deck?

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

Default controller config not fully functional
Some in-game text is small and may be hard to read
Shows Steam Deck controller icons
Default graphics settings perform well on Steam Deck
External controllers are not supported for the primary player

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 95
Steam features: Cloud saves, Family Sharing
Languages: Full audio: English, Japanese, Simplified Chinese, Korean, Traditional Chinese, German, Russian.

Does NightMare King 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