PUZZLES
Playable Puzzles
Daily-updating Tridem (a weekly rule arc) and CRYPTEM (a reel cipher), plus the browser-playable Labs.
Daily puzzles
- No account
Tridem
Three slide as one — a weekly arc
A daily sliding puzzle whose rule changes by weekday. Slide three pieces onto their goals. New every day; the full archive is free to browse. The engine itself verifies the unique solution.
- Free account
CRYPTEM
Reel cipher — a daily cipher lock
Rotate the reels until all five columns decode to their target digits. A logic lock whose cipher table is fully deducible from the opening position. Updated daily; the full archive is free to play.
- Premium only
Math?
The symbols lie — a daily rule-deduction number puzzle
What the five symbols do to a number reshuffles every day. Deduce today's rules from nothing but the results of your placements, across three boards. Stage 1 forces every symbol once — yet never pins the rules down; the back half is engineered to betray your first theory. Updated daily; the full archive is free.
