Sum61

A fast-paced multiplayer arithmetic card game.

Try The Sum61 Cards

Drag a card onto its pile to see how Sum61 cards change values. Each example shows one card type from the game and keeps the math visible.

Addition card

54
PileAddition pushes a pile upward and can finish a pile that is close to 61.

Subtraction card

28
PileSubtraction lowers a pile without going below 1, which makes it useful for defense.

Multiplication card

19
PileMultiplication can turn a quiet pile into an immediate threat.

Division card

48
PileDivision only works when the result is a whole number.

Reverse card

16
PileReverse changes digit order and can create surprising routes to 61.

Swap card

22
55
PileSwap trades pile values.