I picked up Sociable Soccer 24 for the steam deck as I just wanted a simple football game and FIFA doesn’t really work. Pretty good game, the controls can be a bit weird at times but enjoying it for the easy pickup and play style.

UBoat - it’s a u boat game / simulator of sorts. Complex, slow game play as you stalk convoys, set up for the ambush, then escape the destroyers hunting your uboat.

Not sure whether it's "lesser known", but it's old: Rise of Nations

If it were on sale, I'd say Fling To The Finish. But for now, I'll have to probably just wait and see what else is on sale that catches my eye.

I'm not sure if it's on sale but I'll just keep talking about Revita because it's such a succinct rogue like that blends hollow knight and TBOI very well.

I already owned it, but Banished is on sale for $6.50. I have played so many hours of this game and can't get enough! Once I get bored of my existing setup, I just start over with a new village.

Purchased Ready Or Not. I am having a BLAST with this game! It's niche game and I am really into it.