Fiend Heart

A free side-scrolling platformer starring an acrobatic vampire

RM120 · Released Dec 12, 2022

Reviews: Mostly Positive; 70% of 86
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 2 years ago; Feb 13, 2024
Minimum PC: 1 GB RAM · 0.5 GB disk; Full requirements

What is Fiend Heart?

This single-player 2D platformer follows Eliza through her castle after unexpected guests arrive. You jump, air dash, slide, backflip, wall jump, and attack through seven levels of obstacles and enemies, speaking with a monster girl at the end of each.

For you if...

+you enjoy short games built around difficult platforming
+you like cute characters and comedic dialogue

Not for you if...

−you prefer forgiving challenges with little trial and error

What players say

70% of 86 reviews are positive

Players praise the smooth movement, but criticize chaotic, projectile-heavy levels that some find unfair. Some also object to replaying the final platforming stage when returning to the boss.

Screenshots and trailer

Fiend Heart system requirements

Minimum: 1 GB RAM, 0.5 GB of disk space.

As published by the developer.

Can my PC run Fiend Heart?

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

Set up my PC →

Minimum

OS: Windows 7
Memory: 1 GB RAM
Storage: 500 MB available space

Does Fiend Heart have co-op or multiplayer?

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

Single-player

Does Fiend Heart run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 8
Steam features: Family Sharing
Languages: Text only: English, Spanish - Spain, Japanese.

Does Fiend Heart 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