Oh my gosh I was so hyped for this game. You did a phenomenal job with the ar and the music is really really good as well.
The core idea here is good, but with only one change of a few I think it could be even better. If there was a way I could play without using my mouse, that would be optimal, as trying to fiddle with onscreen buttons while attacking opposing trains and trying to race to get the cars they dropped can be frustrating. I think that optimally using something like HJKL or even just up and down arrow keys would be a better way to go with this. OR when you're no longer limited by the 64x64 screen size, you could do a further zoomed out game, where the the goal is more like speed of completion of levels where you don't have to deal with opposing trains at all. Overall I think the game is fun when I'm not struggling to find the other trains so I can steal their cars, and I think an improved control scheme would be in the games best interest.
Also just wanna reiterate that the music in this is great. Good gameplay, Great music. Fantastic job with the art, ESPECIALLY the 45s for the cars. No idea how you pulled that off. great job mate.
In regards to the comments you left on the jam page: I love that you tried to limit yourself in a new interesting way by using train movement. You did a great job, and your game is so close to being really really good. Hope you develop it more! (and zoom it out as soon as this jam is done, though please don't also upscale the art, it's fantastic.)
Edit: I'd also like to note that I am terrible at this game, so in case that matters.