
A cursed incremental horror game about prime-number obsession. Discover new ways to find primes faster, smarter, and weirder. ████████████████████ Belphegor's ██████!
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About
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.
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 ██████
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Languages: English, French, Japanese, Korean, Portuguese - Brazil, Spanish - Latin America, Italian
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Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.