As I asked with the Mario Galaxy 2 thread, what is the point of this? I played Timeshift, and considered it alright in story, though gameplay was at times adequate, and at others fucking confusing. Level design wasn't the best, either.
But the thing is, instead of discussing which games with time travel involved we prefer, why don't we discuss the actual gameplay mechanics for time travel/manipulation that truly worked? After all, it would fit a bit better with the subject matter than 'i think chorno Cross was the berst game evar!!!!', and might even be useful to whatever aspiring developers (LIKE ME) decide to look at this thread.
To me, Yahtzee has always been a source of at least two things: a good laugh, and good ideas. From the design and commentary on the Chzo Mythos, to his reviews of games with Zero Punctuation, Yahtzee has always made something that I could look at and extrapolate good information or ideas from. So why not help, people, instead of turning this into just another opinion thread?
Second thoughts: Besides, although time travel isn't really a gameplay mechanic, I still think the Chzo Mythos are the best games to actually incorporate time travel. Storywise, at least; some puzzles were an absolute ***** to get through.