Build arithmetic circuits. Start at a free number, alternate operators and numbers, and finish at the exact value of each goal. Calculate in route order, from left to right. Use at least one operation. Routes cannot cross or share cells. Division must be exact and intermediate values cannot be negative. Undo and erase freely. Relays restore signal on passage; time does not drain signal.
Tap or drag, try different routes, use hints and restart the same board without a penalty. Progress is saved locally. Music can be switched on or off. Optional automatic expert challenges follow demonstrated mastery. Interstitial ads may appear between levels.
Connect numbers and operators in a retro arithmetic puzzle.