Dragonlance: Legends Trilogy

This is the closest thing to a direct line in the tabletop cluster: Dragonlance is a D&D campaign setting, and the novels were written by the people who designed it. Weis and Hickman built Krynn as TSR modules first and then wrote the books that go with them, from a campaign they were running. Raistlin's magic obeys the game's Vancian rules, the dragons follow its colour taxonomy, and the party is a party.

Weis and Hickman, the same world of Krynn, and a direct continuation: Legends follows Raistlin Majere out of the first trilogy and makes him the centre of the second. Both were published by TSR as fiction attached to the Dragonlance campaign setting, so the shared universe is a commercial fact as much as a narrative one.