1. 01
   Start with the tutorial. The first time you press Play, Spaceblox offers a guided tutorial. It introduces one rule at a time on small boards and lets you practise each one before moving on. You can replay it any time from the main menu.
2. 02
   Look at the board. Some cells already hold tiles. Tiles with a lock icon are fixed and cannot be changed — they are your starting clues.
3. 03
   Place tiles. Tap (or click) an empty cell to cycle through the colors: Yellow, then Blue, then Green. Stop on the color you want.
4. 04
   Fix mistakes. Press and hold a filled cell to clear it, or use Undo and Redo in the top bar. Restart puts the board back to its starting layout.
5. 05
   Watch for red. If a placement breaks a rule, the affected cells are highlighted in red. Change one of them to resolve the conflict.
6. 06
   Slide purple tiles. On boards with purple tiles, tap a purple tile to hop it along its arrow to the linked cell.
7. 07
   Fill the last cell. When every cell is filled and no rule is broken, the level is solved and you see how many stars you earned.
8. 08
   Need the rules again? The How to Play button opens the full rule guide with valid and invalid examples at any time, even mid-level.

Each campaign level has up to three star goals:

1. 

   Solved

   Finish a valid board.

2. 

   No hints used

   Finish without using a hint.

3. 

   Time

   Finish within the level's time limit. Running out of time never ends the level; it only means this star stays empty. On boards with purple tiles, a star can instead ask you to use no more than a set number of purple hops.

1. 1
   Hunt for pairs first. Whenever two cells of the same color sit next to each other in a line, the cells on either side of that pair must be the other color. This is the single most useful deduction in the game and often unlocks a whole row.
2. 2
   Fill the gap in a sandwich. If you see yellow, empty, yellow, the gap must be blue (and vice versa). Three in a row is broken whether the middle tile arrives first or last.
3. 3
   Count to the halfway point. In a six-cell line without green, Equal Balance means exactly three yellows and three blues. Once one color reaches three, every remaining empty cell in that line must be the other color.
4. 4
   Odd lines need a special tile. Yellow and blue must be equal, so their total is always even. A line with an odd number of cells therefore needs a green or purple tile somewhere in it. Because there can be only one green per line, finding where that green goes is often the key to an odd-sized board.
5. 5
   Treat green as a wildcard that can block itself. Green counts as both colors for the Rule of Two, so it can never sit directly beside a same-color pair (yellow-yellow-green or blue-blue-green) or between two matching tiles (yellow-green-yellow). Green is easiest to place next to mixed neighbours.
6. 6
   Use links as shortcuts. An "×" link on a yellow/blue board means the two cells are opposites, so knowing one tells you the other. Chains of "=" and "×" links let you carry information across the grid.
7. 7
   Move purple tiles early. Sliding a purple tile changes which cell is empty. Decide where each shifter should rest before filling its neighbours, and remember a shifter can be blocked by another one.
8. 8
   Let red highlights teach you. A red line shows exactly which rule broke. Rather than guessing, undo and ask which rule the red cells are breaking.
9. 9
   Save hints for real dead ends. Solving without hints earns a star. If you are stuck, scan every row and column for pairs and halfway counts once more before tapping Hint.