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.

APB Reloaded [Steam store page]
Third-person shooter MMO with odd aiming and repetitive missions. The teams are often completely unbalanced and the mission goals sometimes are as well. Turtling many times wins the match.

Spiral Knights [Steam store page]
The graphics are cute and the game seems potentially fun, but it lags incredibly bad on my PC - and I'm not sure if it's a problem with the game itself or their servers coping with the player load. Regardless, unplayably laggy even when moving.