Try the free demo of HOSHIKUI, an action roguelite with no attack button. You are a dying star: ramming other stars is how you attack, heal, move, and grow. Steal their heat and outrun the heat death of the universe.

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About This Demo

A free taste of HOSHIKUI

This is the free demo of HOSHIKUI, an action roguelite with no attack button. Heat is your HP, your fuel, and your time limit. You are a dying star drifting through an infinite, procedurally generated galaxy, getting colder every second.

Collision is everything

  • Ram other stars to attack, heal, and propel yourself
  • Steal heat and gain mass to survive the heat death of the universe
  • Chase a high score across a galaxy that is different every run

No art files. No audio files.

Every visual and every sound in HOSHIKUI is generated in code.

Enjoyed the demo?

The full game adds more celestial bodies, in-run upgrades, a permanent research lab, and achievements. Add HOSHIKUI to your wishlist or grab the full game on Steam.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

The developers describe how their game uses AI Generated Content like this:

The game's source code was written with Claude Code, an AI coding tool by Anthropic, under the developer's direction and review.

System Requirements

    Minimum:
    • OS: Windows 10 64-bit
    • Processor: Intel Core i3 (4th gen) / AMD FX-6300
    • Memory: 2 GB RAM
    • Graphics: Vulkan 1.0 capable GPU (Intel HD 520 / NVIDIA GeForce GTX 750 or better)
    • Storage: 300 MB available space
    Recommended:
    • OS: Windows 11 64-bit
    • Processor: Intel Core i5 (8th gen) / AMD Ryzen 5
    • Memory: 4 GB RAM
    • Graphics: Dedicated GPU with Vulkan 1.0 support (NVIDIA GeForce GTX 1050 or better)
    • Storage: 300 MB available space
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