Make your sum count.

01. Start equal

Both players get a positive 2×2 matrix that sums to 10. The arrangements can differ.

Try it: tap a cell to add 2. Σ 10

02. Play your card

Take turns choosing from the same eight cards. Drag one onto a target, or click the card and then its target.

DEFENSIVE cards affect you. OFFENSIVE cards affect your opponent. EITHER cards give you the choice.

Use R/C buttons for rows/columns. Swap cards need two selections. Shields ◈ block one row/column removal. Transpose exchanges rows and columns in either matrix, moving shields with them.

03. Build with reflexes

Add Row / Add Column starts a new line of 1s. Click each numbered target before it disappears to add one point.

Targets shrink and speed up. You keep every point when you miss, then the turn passes. You cannot cash out early.

04. Beat the clock

Matches start with 120 seconds. Turns shrink from 6 to 3 seconds. Miss a turn and three random cards are replaced.

Time tiles add or deduct 5, 10 or 15 seconds. Match-clock tiles change the shared clock and pass the turn. Turn bonuses extend your current turn and let you keep playing; turn penalties shorten the opponent’s next turn. Exhausting a clock immediately ends that turn or match. Larger time changes are rarer, and turn-clock tiles are much rarer.

The highest signed sum wins. Negative cells subtract from your score. Equal sums draw. Ads happen before the clock starts.