Very fun and polished entry ! 

The panic of building train tracks while the train is moving is pretty fun. Simple but effective design. The additional stuff (esp the trees) were where thought out and implemented. Had fun playing through the levels. 

I made my train blue :3

The copyright free music is annoying to me though. 

Small neatpick : 

- The red arrows looks like a speed buff, not a slow. Once you know it, you know it, but it's pretty unintuitive visual language. Inverting the two colors would've made more sense (or change the sprite to something less that indicates a slow).

Great game! I really liked how the music changed with the speed of the train (or at least it seemed to hopefully that was intentional). Puzzles were fun but I personally would enjoy more of a puzzle game than a race against the clock because I was trying to keep up lol. This well executed though. Good job! Woohoo!

Cute take on a track building game. I think one thing that might add a bit to the challenge is to give the player a set number of each type of track they can place per level. And maybe don't start the train until the first track is placed -- I lost a few times just because I was looking ahead at the level and thinking of what I should do lol. A few levels really made me think, which is a good sign for a puzzle game. Good work!

Fun little game and good number of levels although felt a little too easy more moving objects like the cow would have made it more interesting. But understand the time constraints, overall nice submission!

Super fun game! I loved how I could use the mouse or the hotkeys. It built a good bit of tension while not being too difficult. I managed to get through the whole game getting all the coins along the way. Nice entry!!

Really fun game. Playing with a trackpad makes it quite challenging but I did manage to finish. Really liked the music speed change and I can see how this game could be easily expanded. Overall great job.