Undertale has become one of the year's most acclaimed games for numerous reasons: its ferociously original combat, its terrific sense of wit, its unique tone, and of course, the fact that despite running in at a fairly short 6 hours, there are a ton of ways to play through it. That's right, every Undertale experience is a new one: there's immense replay value to be had in deciding whether to spare enemies or kill them, and this will have reverberations for future playthroughs, as enemies will either talk to you differently or possibly not even appear at all. In addition there are several branching storylines and alternate endings, so plenty to keep you coming back for multiple playthroughs.