available on Xbox Live.
Tropico 3 is a fun game on PC, I hope it's as good on the 360, basically you are the leader (can create a leader as well) of a small island nation during the Cold War. It's up to you who you ally with during these tense years.
Jurassic: The Hunted is probably going to be more shooting lots of lizards. We shall see.
In any case, hope you enjoy at least one of them.