Color memory

The game shows a sequence of colors on the screen and the player must repeat it with the four buttons.
there are several modes :
- Classical : The score is incremented and a new color is added to the current sequence when the player manage to repeat it
- Classical+ : The score is incremented by the number of colors found during each try. A new color is added to the current sequence when the player manage to repeat it. The player has 4 tries.
- Reverse : Same as classical but the sequence must be repeated from the end to the beginning
- Count : Same as classical but the order does not mater.
- Survival (Easy/normal/hard) : a new sequence of (3/6/10) colors must be repeated. The score is incremented for each sequence.