SWIPE·BY·THE·RULE
RULE SHIFT
A reflex game with one twist: the rule keeps changing. Read the banner, sort each card left or right before the timer runs out, and adapt the instant the rule shifts — because it will, without warning.
Game modes
Three ways to play, one skill: adaptability.
Climb mode
An endless level map. Each level is generated from a seed, so it's identical every run — replay any cleared level to perfect your stars. Levels ending in 0 are boss levels; levels ending in 5 are breathers.
Daily challenge
One seeded level per day, same for every player. Finish it to keep your daily streak alive — miss the day and the streak resets.
Survival mode
One life. Rules keep shifting until you slip. Your best run is saved as the number of levels cleared.
Features
Everything in the app, at a glance.
30+ rules
Parity, primes, colors, shapes, Stroop ink, arrows, letters, words, equations, fractions, dots, pairs and N-back memory — each with its own card style.
11 modifiers
OPPOSITE flips the rule, MIRROR swaps the sides, DELAY grades the previous card, AND/OR combine rules, and TRAP, FOG, TEMPO, DECOY, DBL SWITCH and CHAOS bend the deal itself.
Combo scoring
10 points per correct swipe, multiplied x2 at a 5-streak, x3 at 10 and x4 at 20. Fast answers earn up to +5, and the first correct swipe after a rule change earns +20.
Stars & accuracy
Earn 1 / 2 / 3 stars per level at 70% / 85% / 95% accuracy. Every cleared level stays unlocked as a checkpoint — losing never sends you back to level 1.
Stats that persist
Best score, total swipes, accuracy, rounds played, day streaks and best survival run are all tracked on-device.
Fully offline
No accounts, no ads, no servers. Every level is generated locally from a seed and all progress lives on your phone.
The climb
Difficulty is a budget that grows with every level — spent on harder rules, more rule slots and nastier modifiers.
Think you can keep up?
The rule will change. Your brain will lag. That's the whole game.
LEARN THE RULES