Yokamaa lillyvideogames I like Dawgs in the House but it's a little too light on the tech side for my tastes
CaptainCarbon It's probably a tie between Arcology on Permafrost and Upshift. Those files came out around the same time and ushered in an entirely new era of stepcharting almost by themselves.
cmmf Artificial Snow, lots of movements that require you to be engaged but never once does it feel unfun