[FOR FASTER LOADING, SHIFT + GREEN FLAG] Drop your penguin on some ice. If it has a number bigger than 0 on it that means thin ice is around that block of ice. Like if I drop my penguin on an ice and it shows a 2 that means there are 2 thin ices around that one ice. Use the [E] key to place and remove flags. Stepping on thin ice = lose
All credits to BricKernel for this game. Retextured the "0" ice tile to a lighter colour.