LÖVE is a unique SDL wrapper and API. it is a blast to use and makes great 2D platforming games.
Unreal Engine is the leading game engine available and has been for over a decade. We pride ourselves on knowing the ends and outs of the fantastic game engine.
Although we at Larku Media do not limit ourselves to any one 3D creation suite, we have a special fondness for this often overlooked 3D creation application.