I enjoyed this short trip well enough. It is a pretty creative use of a multi-doctor adventure. I feel as though Briggs and Russell did a pretty impressive job with such a sprawling cast, and I like the quirky, disjointed nature of the narrative. It had a fun, poetic, desperate feel to it, as if more and more of the Doctor's lives were being shaved away. The monsters were pretty interesting and I enjoyed the ending with them, it feeling very Doctor Who. It reminds me a bit of some of the other Doctor crossovers I've read in prose - the more light, shorter narratives that really just give each Doctor a bit of lip service and fanfare. It's hardly offensive by any standards, in that regard, but the unusual narrative goes a long way to helping keep it feeling pretty fresh.

In such a large franchise, you could do a lot worse. All told, this one yields a solid recommendation from me, though it really benefits from being familiar with the first seven incarnations.