Hedgehog and apples

The rules are simple: you have to collect red apples, each collected gives +1 point, and each missed red subtract 1 point. Green apples are not ripe, each green caught subtract 5 points. If points is lower zero, the number of lives begins to decrease, in total five lives.
To go to the next level you have to score 30 points. With each new level, the speed of the game increases. The maximum level that you have reached is saved and you can try to go through it repeatedly or start from the first level by start a new game.