As I've mentioned in a previous entry, I've been running two separate D&D campaigns for the last year. The first campaign, set in Varisia, is played with a bunch of friends and my kids using the 4th edition rule set. The other is for a group of colleagues at work set in the Forgotten Realms utilizing the new 5th edition rules. Now, I'm okay with different campaigns using different rule sets, but usually it is two completely different rules like Mutants and Masterminds for one and D&D for the other.
