Great concept, reminded me of an old game I played as a kid called "Pipe Dreams". The idea of using trains is very interesting and fitting to the mechanic, and I also loved the pixel art and train animation. Would gladly play a full game if it's ever released :)
Trackbound is a prototype game made in 48 hours for the 21st Gamedev League Game Jam.
Click switchable tracks to navigate your train around the world and pick up more carriages, avoiding dead ends & crashing!
Trackbound_Windows.zip 13 MB