Quoted By:
Mega Man X, then Pikmin 3, then Tictacs.
Because MMX is a classic and you can easily finish it in a single sitting. Pikmin 3 is a solid entry in the series and also very short, though longer than MMX. FFT is best saved for last because it's a decently lengthy (shorter than most mainline FFs but still a good 30ish hours or more) game that you'll want to take your time with.