Tracking since Oct 5 — growth appears once we have a second daily reading.
Update history
1.1Sep 9, 2026 · seen Oct 5, 2026
Added a share button so you can challenge friends. Minor fixes and improvements.
Only the current version so far — new entries appear as the game ships updates.
KOLLATZ — pick the right number before time runs out.
Even? Cut it in half. Odd? Triple it, plus one. Keep going and you'll always land on 1 — that's the Collatz conjecture, one of math's great unsolved mysteries. Kollatz turns it into a fast, addictive puzzle.
• Quick rounds, endless stages
• Resume where you left off
• Public leaderboard
• Your own profile & stats
• Play as guest, or sign in with Google to save progress
• Light, Dark & Colorful themes
No tutorials, no walls — just you against the numbers.
