Monkey business!

This is a personal illustration regarding a race of Ape like aliens from outer space, who decided to invade earth in search of a better quality of bananas. However, along the way, they find an old portable gaming console and several games from the late 80's, and eventually get distracted and forget why they came to earth in the first place... Two of them are marvelled by this little machine, one feels left out, another is intrigued by the sounds and lights coming from this rectangular object, and the big one is bummed because he didn't get to see any action! Now, can you guess what they're playing?...