HOW TO PLAY
Combine 4 cards to make 24.
Race the clock for the highest score!
1 Tap a card to select it
2 Tap an operator
+
−
×
÷
5 Repeat until 1 card remains. If it's 24, you win!
Timer
Timer starts at 120s. Each solve adds +30s.
Lightning solve finish a round in under 5s for an extra +5s.
Wrong answer costs -3s and resets your streak.
Scoring
100 pts per solve, plus 5 pts per second left on the timer.
Streak consecutive solves multiply your score up to x10.
Speed solve 5 rounds in <30s for x2, 10 for x4. Resets on wrong/skip.
Difficulty
Speed increases every 4 solves. Stay sharp!
Expert / Master tiers can require negative intermediates, then fractions too.
Controls
Undo reverses your last move — no penalty.
End — stops the game and goes to the score screen.
Restart — quits to the main menu. Score is not saved.
Skip — skips the puzzle. Costs -1s and resets streak.