Yep, GLScene may look dead, but they're still working on it. I noticed they're trying to modify the core to use the latest standards (i.e. OpenGL 3.x).

GLScene used to be a really nice set of VCL components not even for starters, but for professionals, too. Nowadays, it lost its potential, but it doesn't mean it's useless! On the contrary, I personally know a guy who made some decent cash for writing a simulator and he used GLScene in his project! It clearly proofs that GLScene is suitable for a 3D game and you can really make a good one - anyone remember AirBlast by Eric Grange?