No sounds, so that's a thing.
A few technical hits. Yer windows app is configured as a console app, which is why that console window shows up. It also went right to the top left of the screen, which means that yer call to SDL_CreateWindow specified a 0 x and y?
Anyway, I found the visual of this game incredibly compelling, as I did the interface. So minimal. So retro. So delightful.