One of my favourite films as a kid was Big. The film starred a young Tom Hanks wishing that he were bigger so he could do the things that adults do i.e. Not go to school (although being a teacher myself that didn't exactly pan out the way I planned) and play with a giant floor piano in a toy shop.
There's a scene in the film where he is playing an adventure game on his computer, The Cavern of the Evil Wizard. The game was made up for the film and only constituted one screen but BoMToons has made the game playable in-browser here.
Relive the Big scene yourself and play it!