As a tower defence junky, this hit many of the right buttons for me. Once I reached 29 carriages and my RTX 4070 Super was lagging with each new round, the train suddenly stopped stopping at stations and just kept going round and round without any enemies. I choose to believe this was my victory lap and that I had won.
What I liked most was making the decision between buying new carriages, arming carriages, and placing towers on the map. I ended up planning very carefully and then reached that wonderful part of tower defence games where you become so rich and powerful that you're unstoppable. I just wish the game had more juice!