Joining MLB Stickball on Xbox Live Arcade today are two more games – Tenchu: Shadow Assault and Beat’n Groovy. All three titles are 800 points ($10) each.

The first title is a party game spinning off from the famous stealth-action Tenchu series. It features a “trap action” game, supporting four-player multiplayer both locally and over Xbox Live. The latter is a music-rhythm title using the standard console controller. It’s music library consists of music from different genres such as electronic and pop, offering two-player versus play both locally and on Xbox Live.