Cities: Skylines is Turing Complete - Daniel Bali - Medium
Damon Zucconi

(Non-clickbait title: building a 4-bit adder in Cities:Skylines.) Cities: Skylines is a city simulation game that is complex enough to build universal logic gates in it. Using universal logic gates it is possible to construct any circuit including Turing complete machines. So, just like in Minecraft one can build a computer inside Cities: Skylines.