TPF2 or CS2

Cities skylines II is currently at a discount. So the two games have the same pricetag. I Am quite familliar with both gameplays through the OG games and Youtube. but am unsure if i should get both, or only one of them. What game are you guys more invested in?

I have good Hardware so i shouldn't get issues with Performance on either game.

Intel i9 13th gen Nvidia 4090 16gb ddr4 ram Ubuntu (idk what Version)