If you have a Xbox Live Gold account you can download Lara Croft and the Guardian of Light for free until January 31st.
This is the first ever co-op action-adventure game featuring Lara Croft. You and a friend can play co-op or you can go solo and explore and solve deadly traps, kill off massive groups of undead enemies and monsters, collect over 60 artifacts and more in this title. Lara Croft and the Guardian of Light offers twin stick shooting, and platform gaming shown through an isometric view. Several review sites have given this game 90/100 or 9/10 scores for it’s action, gameplay and amazing visuals. Normally it goes for $14.99… so get it while it’s free!