Hey there! This is a pretty good game and a super unique idea. It took me like 3 minutes to wrap my head around what's going on but after I got it, I gotta say it's really fun to play with. The music was pretty simple which fit the overall aesthetic and visual you were going for. Some things I probably would say for a critique is maybe during runtime we should be able to see if the position is valid or not and the upgrades could be interchanged every round. But other than that, super solid entry!