Train Valley [Steam store page]
Starts out simple, but to be really good at this game you have to be able to multi-task incredibly accurately and quickly. That just isn't me, but the game is well designed and will be fun for people who love the challenge of optimizing their strategy and reaction times to climb the leaderboard.

HunieCam Studio [Steam store page]
It seems like a lot of people like this game, but it's average at best, with the quality declining the more time you spend playing it. Basically it's a shallow clicker game, which surprised me since the store page seems to imply a bit more strategy and management.

Instead it just tries to keep you occupied clicking a handful of different buildings instead of adding any real depth. I'm sure you can optimize it slightly to get a higher score, but there aren't even semi-deep strategy or mechanics here.

As a side note, this game is tagged 'Nudity', but does not contain any as far as I can tell - unlike other games like HuniePop from the same creator.

Needs a faster fast forward, and has a few annoyances if you're trying to get Expert achievements - but the normal gameplay is fun and well designed.