SHIFTBOUND · RULE PUZZLE
Don't move the blocks.
Change the rules.
Every color follows one rule: slide this way. Turn a rule, and every block of that color moves. Watch them push, follow and chain until one slips out the exit.
One tap. Every block moves.
Tap the rule tile to turn it 90°. The ★ block slides until something stops it. Get it to the exit.
Simple rules. Deep puzzles.
Each new idea arrives on its own and then folds into everything before it.
60 handmade levels
Six worlds, from a first gentle shift to four colors pulling four ways. Every level is checked by a solver, so every one has an answer.
Chain reactions
Blocks move together, one cell at a time. When the one ahead leaves, the one behind follows. Send two out in one move for a bonus star.
Locks, swaps and gates
Locked tiles won't turn, but a swap token trades two directions. Pressure plates hold gates open, as long as something stands on them.
A new puzzle every day
Everyone gets the same Daily Puzzle, easy on Monday and toughest on Sunday. Keep your streak and share a spoiler-free result.
Perfect clears
Three stars is good. Matching the shortest solution with no hint and no undo earns a 💎. Can you collect them all?
Build your own
Draw levels in the Workshop. The solver checks they can be beaten and sets the target. Then send a friend the code.
Clean, calm, made for iPhone.
Light and dark themes, sound and haptics, and a hint whenever you're stuck.
Need a hand?
Stuck on a level, found a bug or have an idea? We read every message.
Email us
Tell us your device, iOS version and the level number if it's about a puzzle. We usually reply within a few days.
✉️ support@marvinsoft.comI'm stuck on a level. What can I do?
Tap Hint to see the next best move. Hints are free and unlimited. You can also Undo or Restart at any time. Using a hint or undo only rules out the 💎 for that attempt.
How do I get a 💎 Perfect clear?
Clear the level in the shortest possible number of moves (the ★★★ target) without using a hint or undo since your last restart.
When does the Daily Puzzle change?
A new puzzle arrives at midnight in your local time. Everyone gets the same puzzle each day, easiest on Monday and hardest on Sunday. The Daily Puzzle unlocks after you clear World 1.
How do I share a level I made?
In the Workshop, tap Check Level so the solver confirms it can be beaten, then tap the share button. Your friend can open the link, or paste the message into Enter Code in their Workshop.
Is my progress backed up?
Progress is saved on your device and included in your iPhone's iCloud or computer backup. Deleting the app deletes your progress, so restore from a backup to keep it on a new phone.
Does the app collect my data?
No. There are no accounts, ads, analytics or tracking. See our Privacy Policy.