I’m not normally a big fan of Flash games, they tend to either be poorly implemented or lacking scope. This week however, I discovered the brilliant physics based Flash game Fantastic Contraption.

The premise is simple; using a series of different rods and wheels you must build a machine to move a ball into a target zone.  You are free to build your machine however you like and because of this the game is extremely open ended.

By creating a standard account, Fantastic Contraption lets you save your designs and share them with friends as well as browse through other people attempts.  After upgrading to a full account (a one-time fee of $10), you are able to create your own levels and share them with others.