But the real costs are with the expansion packs. It's now one of the best free PC games available, since Crusader Kings 2 went free-to-play. With Crusader Kings III now assuming the throne (check out our CK3 review and our CK3 tips guide), it must be noted that DLC support for CK2 has finally coming to end. So many packs have been released that we figured a CK2 DLC guide would be needed to help sort them out. Crusader Kings II is the grand strategy game that launched a thousand DLCs, spawning an (at the time) unprecedented system of post-release support that could see expansions releasing nearly a decade after the original launch.