Picross 3D 2 is what a sequel should be, especially for puzzle games. I would've been happy with more puzzles, but it went further. It iterated and engaged my brain in new and clever ways that I hadn't even considered, it revised its progression ramp in a way that I found more satisfying, and it gave and continues to give me dozens of hours of enjoyment. If you have any interest in logic puzzles and brain-teasers, this is a can't-miss.
In broad terms, I can understand why Mario Kart 8 might be hard to justify for some players. It's a re-release of a game Nintendo put out three years ago, and that Nintendo fans (who make up a large portion of the Switch audience) probably already played. That said, this is a fantastic addition to the Switch library, not just as a great game but as one that benefits from the system's core features. It adds the requisite new content and fixes the one large oversight of the original. Mario Kart 8 was already one of the best in the series. Mario Kart 8 Deluxe is even better.
Bastion certainly wasn't a fluke. Transistor cements Supergiant Games as one of the sharpest, most stylish, and unique small developers. Though some of its flourishes aren't quite as fresh the second time around, Transistor speaks with a unique creative identity, mostly successfully refreshes solid RPG mechanics, and tells a poignant story worth experiencing.
Rainbow Curse is a little on the short side, but that also means it doesn't overstay its welcome. At seven worlds consisting of four stages apiece, it can be finished relatively quickly. It feels like a nicely complete package regardless, especially when you factor in challenge stages, collectibles like Elline's diary, and the multitude of hard-to-reach treasure chests.
Halo: The Master Chief Collection has a handful of quirks and legacy issues, but those don't diminish the achievement. It's a stellar collection of some of the best games of the last few generations, with options galore and clever ideas like Playlists to breathe new life into old content. It's a must-have for Halo fans, and may rightly serve as a satisfying introduction for newcomers.