Now we can make easily 3D models of old block games like Tente with MLCad and see this with programs like LDView (http://3dtente.wikia.com/wiki/3D_Tente:_Using_Ldraw_files_and_installing_tools_(ldview%2Bmlcad)), Buf3D, LeoCAD, etc...
These programs use an open format called LDraw that we can import to blender and add to games like SuperTuxKart (http://supertuxkart.sourceforge.net/):
There is also a lot of karts ready to use (http://cpcbegin.nixiweb.com/tente/index.php?pagina=stuxkart) extracting this on kart folder.
I find cool that they are actually Tentes and not Legos :D. I had plenty when I was a kid and I still keep them at home, great blocks to build many things!