You start with 30 coins. Buy a cube and it earns coins every second (a 1 cube earns 1 a second, a 2 cube earns 2, and so on). Save up, buy another one the same, then merge them into the next cube. Every new cube you make, the shop only sells that one, and it costs 2.5 times more. Can you build the 1048576 cube?
You built the biggest cube there is! That is over a million coins every second from one cube.
All your cubes and coins go and you go back to 30 coins. Your biggest cube ever stays on the leaderboard.
Tap Buy to buy a cube. Cubes earn coins every second, even while you are away (up to 8 hours). Drag a cube onto one with the same number to merge them, or tap one then the other, or just press Merge!. Each new cube you make changes the shop to sell that cube, at 2.5 times the price. Big new cubes earn PhatCoin, and your biggest cube goes on the leaderboard. Your game saves by itself.