quite a few games , shuffle party, splinter cell and quite a few others are not compatible with wp8 so the developer has to make a upadte to get it working all depends on the original dev if they want to or not
Huh. Now that's weird. When I got my 8X a week ago, i loaded a bunch of games onto it - including Orbital and Shuffle Party. Both of these load and work fine (just quickly tested 'em now) although Shuffle Party seems to have an issue with the puck flipping and flying about which i don't remember from my brief time with it on wp7.
Orbital seems to play just fine except it looks horrible and unaliased on the new high-res screen - you can see the pixels :<