Great game! It reminds me of a custom warcraft 3 map 'PyroTD'. I wouldn't be surprised if that was an inspiration. I always wanted to play a standalone game of that style. This captures that gameplay very authentically and is awesome to see it done in a 4 player free-for-all setting.
The multiplayer is very interesting, I appreciate the work that was put into to make an 'offline' version using replays. Such a fantastic innovation to make this game feel expansive before it hopefully gets big enough for online multiplayer.