Tic-Tac-Toe lifted into three dimensions.
🕹️How to Play
- 1Choose your mode: vs Computer (AI) or vs Friend (same device).
- 2Drag anywhere on the cube to rotate it and see every side.
- 3Tap a glowing empty cell to place your mark — X always goes first.
- 4Connect 3 in a row through any row, column, vertical, or diagonal the cube offers.
- 5If all 27 cells fill with no winner, the game is a draw.
📋Rules
- ▸Players alternate turns — X then O.
- ▸The first player to line up 3 marks along any straight line through the cube wins.
- ▸A 3x3x3 cube has 49 possible winning lines: 27 straight, 18 face-diagonal, and 4 space-diagonal.
- ▸Scores and your win streak persist until you reset them from the menu.
- ▸In vs Friend mode, both players share the same device.
💡Pro Tips
- ★The very center cell of the cube sits on more winning lines than any other — contest it early.
- ★Watch the space diagonals (corner-to-corner through the center) — they're easy to miss while rotating.
- ★Blocking a 3D fork is harder than in flat Tic-Tac-Toe: a single move can threaten wins on two different faces at once.
- ★Rotate often — a line that looks safe from one angle can be one move from complete on another.
ℹ️About
XO Cube takes the oldest strategy game in recorded history and gives it a genuine third dimension. Where flat Tic-Tac-Toe has 8 possible winning lines across 9 cells, the 3x3x3 cube has 49 across 27 — including 4 space diagonals that cut straight through the centre. The extra dimension changes the game fundamentally: the center cell alone sits on 13 different winning lines, making early control of the cube's core far more valuable than any single square in the flat version. Rendered with a real WebGL 3D engine, you rotate the glass cube by dragging, watching your marks glow from every angle.