Paradox Interactive's in-depth city-builder is the latest PC game to receive the Humble Bundle treatment, with a new collection that corrals the base game and over ten DLC packs for under 15.
As usual, it's a tiered affair. If you want, you can just get the game by itself for a quid, which seems like a bit of a bargain to me. As for the DLC packs, these range from mini-expansions with themed items to new in-game radio stations.
Here's how all the tiers in the Cities: Skylines Humble Bundle breakdown: