Applications have to be modified (slightly) by the developer to support Lion's full-screen mode. Sadly, Transgaming hasn't to my knowledge done that.
It might be kind of redundant though - CoH already has full-screen mode. Lion's full-screen mode would only work in Windowed Mode to become a second full-screen mode.
Manga @ Triumph
"Meanwhile In The Halls Of Titan"...Titan Network Working To Save City Of Heroes
Save Paragon City! Efforts Coordination
Since Lion has that fancy-pants Full screen mode, has anyone done any testing to see if CoH can be forced/tricked into taking advantage of it? I've heard of some programs a while back that you could use to try to force any app to be a 'full screen' app, but I also heard those didn't work so well...
I think it'd be nice to be able to just three-finger swipe to go from CoH to another desktop (far better than the annoying fade, or toggling fullscreen!).
We've been saving Paragon City for eight and a half years. It's time to do it one more time.