Major Nelson has revealed the two new titles which will appear on Xbox Live Arcade tomorrow.
First up is South Park Let's Go Tower Defense Play. Does what it says in the title.
The second game, Lucidity, comes courtesy of LucasArts and the team who developed The Secret of Monkey Island for XBLA. It's a pretty puzzle platformer - see for yourself by checking out the videos on the gamepage.
Each title will cost 800 Microsoft Points, which is £6.80 / 9.60 in the old money.