In Swords of Islam, you can play non-Muslim rulers forever and the fact that you don’t have this DLC installed will have no effect on you at all.

Here is a breakdown of all the DLC & expansions for Crusader Kings 2:

To help you work out which DLC packs are worth investing in and which ones are safe to avoid, we’ve broken down every DLC and whether we think it’s worth your money. That’s an eye-watering amount and on top of all of that, it’s tough to digest if you’re just getting started.