This is a tough one. I have so many games that I don't get to play because our game group goes on runs where we play one game for long stretches.
Cthulhu Wars is one I wish I could get to the table more often. Really fun and plays completely different depending on which great old one you choose, so your strategy can completely flip on a game-by-game basis.
Cyclades is another fun one that I wish I could get to play more often.
I played once at a demo table at GenCon a couple years ago. It was a pretty light, but fun, bluffing game. Enjoyable. I would be down to play it again given the chance, but I'm not sure I'd add it to my own collection.
Sunday I'm leaving on a flight for Miami to go on a cruise for a week. So I'll be bringing my Switch with me, and my DS. Coming along for the ride will be Mario Tennis: Aces, Bloodstained, Darkest Dungeons, and SMT Devil Survivor Overclocked.