Matthias Thurau has announced the freeware game Atomorun2008. He put together a homemade 3D engine, using OpenGL (through Derelict, of course), for the game. I’ll give it a spin when I make some time. Let me know how it plays!
Oh, Matthias says he might release the source if people are interested in it 
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It plays very well!
Thanks for adding.