Xenosaga Freaks is a side game in the Xenogears / Xenosaga universe. It contains two different games, a glossary of terms used in Xenosaga Episode I, and a playable demo of Episode II.

The first game contained in Freaks is XenoComi, a humorous adventure game set during the same timeframe as Episode I. It follows several series characters as they try to stop the out-of-control robot KOS-MOS and discover why she's been acting up.

The other game is called Kotoba no Puzzle: Xenopittan, a word-based puzzle game with a Xenosaga theme.