I'm a big fan of Zachtronics, they make some of the best puzzle games out there. (Like SpaceChem, Infinifactory and SHENZHEN I/O which is an upgraded TIS-100)
Even some of their earlier works like RUCKINGENUR and KOHCTPYKTOP.
They also developed Infiniminer, which was probably an inspiration for Minecraft.
Recently they released an early access of their newest game, Opus Magnum, which is an upgrade from the Codex of Alchemical Engineering. I like it a lot already.
But the best thing about Zachtronics games is that sometimes you design something that runs elegant, smooth or just fast that you just have to share it.
To that end, I wish to dedicate this thread to all things Zachtronics and otherwise puzzle game related.
Only one atm, more to follow.
Spoiler: Opus Magnum - Lead Separation show