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, gain mass, and outrun the heat death of the universe — across an infinite, procedurally generated galaxy.
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Match strength key:80+65+50+<50HOSHIKUI
SteamAbout HOSHIKUI
Heat is your HP, your fuel, and your timer.
You are a dying star drifting through an infinite, procedurally generated galaxy. Every second you cool. The only way to survive is to slam into other stars and steal their heat.
There is no attack button.
Collision is the entire verb. It damages, it heals, it propels, it feeds your growth. You aim your own body and commit — there is nothing else to press.
Every run is a race against the cold
No art files. No audio files.
Every pixel of art and every sound effect is generated in code at runtime. Nothing in HOSHIKUI is an imported asset — the stars, their light, and the noise they make are all math.
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Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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