Game description from the publisher:

It all starts with a simple push...

The Impossible Machine is the game where players build ridiculously complicated contraptions to do simple things. Why turn on the TV, when you can have the bowling ball hit a pin, to pull a string, to let the marble loose!? Players earn points by getting their parts, with the right type of momentum, into the machine as they work together to build ever bigger and better machines.

A word of caution (from my personal experience): although the game claims to be for 2-5 players, every time I have tried playing it as a 2-player game, we have run out of cards before the game finished. Each player gets 1 deck of cards. 2 players = 2 decks, and 2 decks just don't seem to be enough.