Ada Playing Cards
This is a climbing game primarily for three players, but also playable by four. Your aim is to be the first to play out all cards in valid combinations, and you will lose if any one of the others to play all their cards before you.
Instruments Trivia by FlashGamesFan.com
Instruments Trivia is a quiz game with two game mode: in 'Listening Mode' you have to guess what instruments produces a certain sound; in "Speed Mode" you have to associate instrument names with images. Haste is a bad advisor but in this game is the speed that counts!