I just to play From The Depths game back in the days. Spent probably over 1000s since early alpha, before Steam Works Early access (Green Lit) was launched.

From The Depths is voxel based game, a bit like minecraft, but player can build vehicles and make them move, fly, dive and fight with other vehicles.

At that times, I built so many vehicles, and wanted see, what I can do with a game. Crossing game bounds and limits.