Flip Numbers

Flip Numbers is a puzzle game consisting of two numbers, a starting number and a target number. The objective of the game is to get from the starting number, to the the target number using minimum number of transformations. You transform a number, by flipping any of its five digits up, or down, or by flipping all the digits at once. As you progress through the game, the levels get harder, and more transformations is needed to reach the target number.

The source-code for the game is available at https://github.com/gorjanz/numbers-game.