Screenshots
Watch trailer on Steam ↗Idle Primes
ipip · Published by ipip
Last updated 28 Sept 2026
A cursed incremental horror game about prime-number obsession. Discover new ways to find primes faster, smarter, and weirder. ████████████████████ Belphegor's ██████!
About this game
Idle Primes is a cursed incremental horror game about prime-number obsession.
Start by manually clicking prime numbers and gradually unlock new ways to find them. Use primes as currency to buy powerful upgrades, automate discoveries, and develop increasingly strange methods for searching the grid.
Features:
Search for prime numbers across dynamic number grids
Unlock automation systems and powerful upgrades
Discover new mechanics that change how primes are found
Satisfying incremental progression with retro-futuristic vibes
████████████████████ Belphegor's ██████
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: 7
- Processor: Intel i3+
- Memory: 2 GB RAM
- Graphics: Nvidia 450 GTS / Radeon HD 5750 or better
- Storage: 250 MB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: 10
- Processor: Intel i5+
- Memory: 4 GB RAM
- Graphics: Nvidia GTX 460 / Radeon HD 7800 or better
- Storage: 250 MB available space
