Games & Media / EVEN OR ODD 1
Beat a mathematical enigma with pure reflexes.
“If it’s even, halve it. If it’s odd, triple it and add 1.” The Collatz Conjecture—an incredibly simple yet maddeningly complex puzzle that has baffled the world’s greatest minds for decades—becomes a brain-melting, high-speed roguelike action game. Read the incoming magic numbers in a split second, hit them with the right spell, and crush the enemy’s number down to 1.
Play free on SteamThe live system of EVEN OR ODD 1
COLLATZ SPEED ACCELERATOR
Halve it if it’s even; triple it and add 1 if it’s odd. Watch the number work its way down to 1.
Click the number to play with it.
Features
Brain-melting even/odd action
Enemies unleash a relentless barrage of numbers. Instantly tell whether each one is even or odd and strike back with the correct magic. Chain correct answers into combos to multiply your power in this high-speed parity action game.
Perfect parries and just defense
Don’t just take the hits. Read the trajectory of enemy attacks and strike back at the exact right moment to turn the tide of battle—an exhilarating test of reflexes as you cut through impossible bullet hells.
Death, rebirth, and grimoires
Death is not the end. Use the currency you collect to permanently upgrade your stats, then hack and equip over 10 grimoires with unique effects to build your own ultimate formula.
System Requirements
| Spec | Minimum | Recommended |
|---|---|---|
| OS | Windows 10 64-bit | Windows 10/11 64-bit |
| Processor | Intel Core i3 / AMD Ryzen 3 | Intel Core i5 / AMD Ryzen 5 |
| Memory | 4 GB RAM | 8 GB RAM |
| Graphics | DirectX 12 GPU (1 GB VRAM) | DirectX 12 GPU (2 GB VRAM) |
| Storage | 6 GB | 6 GB |