First, the technical reality. Cities: Skylines is a complex simulation. It relies on thousands of 3D assets, sound files, textures for buildings, and the logic engine that simulates every citizen's commute.
with what Leo finds when he opens the laptop casing, or try a different genre for this prompt? cities skylines highly compressed 500mb
If you genuinely need to play Cities: Skylines with a tiny footprint, you have two legitimate options: First, the technical reality
If you want to play the game without risking your PC, look for these official sources: textures for buildings