In 2009, I read Fleet of Worlds, by Larry Niven & Edward M. Lerner. It was…ok.
In 2010, I read Juggler of Worlds, also by Niven & Lerner. It was…somewhat less than ok. Well into meh territory.
In 2011, I declined to read Destroyer of Worlds and Betrayer of Worlds. The franchise had begun to smell a bit like Herbert & Anderson’s endless series of Dune novels: milk the fans for all they’ve got, quality of writing be damned.
Amazon tells me a fifth book is in the works: Fate of Worlds, which (apparently) picks up after Ringworld’s Children. It’s hard to care.