Factorio meets BTD6. It reminds me a lot of Mindustry and itches the "factory must grow" brain. I wasn't able to beat the Boss Fight level, as I was not able to keep up with all the different mechanics while the enemies are flowing through (i.e. collecting scraps, dodging rocks, thinking about the wiring layout). I would have loved if I can send out the waves myself so that I can create a machine with multiple sparks merging into one mega tower. Nonetheless, great 3 day game!