[Lerc]

I think it's worth noting that you can tilt with this method, but not roll.

Great for a helicopter game, Less so for general flight sim.

That was a large part of how games were designed back in the day. Start with what you have the ability to do, find the game that matches what you can do.

[nnevatie]

Notice the demo video from Comanche also shows roll.

Edit: To support roll, the renderer essentially rendered the voxel terrain into a frame buffer and then applied camera transformations that gave the appearance of a fully rotating viewpoint. The terrain itself was not being raycast through a true 3D voxel volume.