Floatpoint

This is my favorite Short game. This game is set in the future, when a colony from earth has developed gene-altering technology. The setting is not really important, however. What is important is the negotiation and the recording features.

Negotiation: The main purpose of the game is to work out what will happen between earth and the planet. Your job is to communicate this, but you have to understand the symbolism of the settlers. The bulk of the game is focused on figuring out what to say and how to say it.

Recording: This is actually not even necessary to the completion of the game, so some players have missed it. There are several recordings in the game which can be 'processed' to one of several different modes, such as a cartoon mode, a scientific mode, etc. It was hilariously fun, and unique among games I have played.

One of the great sci-fi games.