cjbruce nice first playable game made with Q3D ive'd seen so far outside the official demo, Great job.
ThePakernator
if u used Q3d before would be very weird to switch to babylon ... q3d has the c2 simplicity or maybe i got to used with it. but there are 2 plugins that are worth trying, to see which fits your need.
they would probably both support your game that you want to make, is a matter what game you want to make with it? underground? call of duty warfare? cause that are possible, but not with C2 as a engine its just not meant for that kind of processing. but you could do a 3d mario land, or 3d sonic adventure type of game. 3d platformers, 3d racing all possible. but would require you to keep the models as lowpoly as possible.
Good luck!
P,S (babylon is a bit faster=more models supported in 1 scene.)