Just finished printing a couple armies for World War Tesla, a 15mm steampunk wargame that requires a 3d printer.
The game is available on Wargame Vault. Everything is digital; rules are PDF, and the units are STL files. It took about 50-60 hours to print the pictured models, but only about $15-20 in plastic filament.
Haven't played the game yet, but the rules are pretty straightforward and we plan on giving them a spin this week.