Recently got a Switch. Got a slew of games for half off during a sale back in Dec. I've been playing..
Spelunky - Fun, but I've hit a wall in unlocking a checkpoint. AFAIK, this is as far as I'll get with this game, so I'll do some research, but otherwise, may move on. Like to this game's sequel (which I also have).
Hades - I've seen this played by friends, so I wasn't completely new to it. It's fun. Even if I never make a successful run. The dialog is full voice, and dynamic depending on the situation you're in, and who else you've conversed with. That said, I may consider using god mode if I really want to see how the rest of the story goes (or just check on YouTube).
Zelda: Skyward Sword - My 3rd 3D Zelda game (Ocarina Of Time, then Breath of the Wild for the previous 2)
I prefer 2D Zelda games, but this was half off (for physical no less). After dealing with BotW's open world, enormous amount of content, and sheer complexity, this is actually a nice change of pace. Not very far into this though (I have yet to do any combat!)
Capcom Arcade 2nd Stadium - A collection of games. Comes with Sonson, but all others need to be purchased. 2 big features that attracted me here are 1) you can rewind (press and hold the ZR button), so any goofs you made, or just want to try something different... this lets you go back up to 15s (IIRC). 2) Save states. To go beyond the Rewind limit, but also if you just want to stop the game and resume later, but also replay key moments. Here, games included...
Block Block - Arkanoid clone, complete with powerups
Eco Fighters - Side scrolling shooter
Pnickles - action puzzler where 5-in-clump of the same color gets removed