No idea why this is getting downvoted. You'll naturally need more control over memory when building AAA high-performance 3D games, but there's tons of great 2D games made with GC languages (see: Love2D, OpenFL, HaxeFlixel, ImpactJS, Unity).
In a lot of 2D games, simple patterns like object pooling are more than enough to squash any GC problems. There's a whole spectrum of performance requirements out there -- no need to discount a framework due to it's language.
Interestingly enough, many times GC tricks like object pooling aren't even the first concern; it's usually proper utilization of GPU buffers and understanding pixel fill-rate more than anything.
It's truly wonderful time for all programming languages in this space.
In a lot of 2D games, simple patterns like object pooling are more than enough to squash any GC problems. There's a whole spectrum of performance requirements out there -- no need to discount a framework due to it's language.