_Twice!_ is a memory-type game. The player is presented with a number of
tiles each which shows a symbol when turned. The idea behind the game is to
make pairs of two identical tiles. If the player picks two tiles that are not
the same, they are turned back again and the player gets another try.
Mismatching will however draw the end of the game nearer. When all tiles are
turned up, the game is completed. For each pair the player earns points. The
score is multiplied when several pairs in a row are made. The game features
three different game modes:
* _Sly_ \- the player has to turn all tiles with a limited number of attempts
* _Agile_ \- the game is timed and the player has to turn all tiles before the time is up. Extra time is awarded for each pair found
* _Smart_ \- the player has to score as many points as possible. The number of points awarded for each pair is lowered when the player mismatches.