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Connection Puzzle

Circuit Vault

Score0
Level1
Best0

Press start when you are ready.

How to play Circuit Vault

Campaign mode

  1. Pick any unlocked level from the level-select screen. 150 levels are grouped into 15 chapters, from Novice Vein through Sovereign's End.
  2. The early chapters grow the grid from 4×4 up to 7×7 as you progress; the hardest chapters move to an 8×8 board. Difficulty also comes from more targets to connect and grey rock "blocks" that permanently seal off a tile, forcing you to route around them.
  3. Tap any non-fixed tile to rotate it 90°. The glowing source and the gold targets are fixed in place and cannot be rotated; grey blocks can never be rotated or routed through.
  4. Two adjacent tiles are only connected when both have a matching open side facing each other. Tiles currently linked back to the source light up immediately, so you can track your progress rotation by rotation.
  5. Every puzzle is generated with a guaranteed solution that already routes around any blocks, so it is always solvable - there's no luck involved, only logic.
  6. Key targets 🔑: from Chapter 8 onward, some levels have one or more key targets. The rest of that level's targets are locked 🔒 and stay unreachable until at least one key is connected first.
  7. Move limit ⏱️: some harder levels cap how many rotations you get. Run out before connecting every target and the level fails - retry for a fresh board. Every move-limited level is guaranteed solvable within its limit.
  8. Win: connect every target back to the source. When you connect the last target, the finished board glows for a few seconds so you can see what you built before the level-complete popup appears. Solving in fewer rotations than the level's par earns more stars (1 star for solving it at all, 2 for a good pace, 3 for solving at or under par), and clearing a level unlocks the next one. Your unlocked levels and stars are saved automatically.
  9. Stuck? Use the 💡 Hint button to instantly correct one tile that still needs fixing. Hints are free and unlimited, but using one on a level caps that attempt at 2 stars instead of 3.
  10. Lose: levels without a move limit can't be lost outright - use "Retry level" to reshuffle the same layout if you get stuck. Move-limited levels fail if you run out of rotations before connecting everything.

Endless mode

One continuous run of ever-harder auto-generated puzzles: each solve advances you to the next level, with more targets, occasional obstacle blocks from level 4 onward, and occasionally a bigger grid. Score rewards solving in fewer rotations. Your best endless score is saved locally. Endless mode also has no fail state - it simply continues until you stop playing.
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Level connected!

Out of moves