@gameragodzilla Tropico 5 is super cheap if you want to try your hand at being the Glorious Leader.

Ziggurat is probably worth the 5 bucks its on now if you want a fun little roguelike FPS.  It's not really terribly deep but the shooting is fun and that's the important part.  I consider it a good FPS to occasionally go a 30 min or 1 hour round with every now and again, which is worth 5 bucks to me anyways.

If you want to try an indie RPG I think is actually good (and IMO the only great installment in a series that is mostly ho-hum), Divinity II is 3 bucks.

Planescape: Torment is a steal for 4$, and its THE definitive classic western RPG, but IDK how interested you are in that since I know you have issues with the iso viewpoint.

Thats my shortlist of games that are on good deals you might like that you probably don't already have.