A really good game with super in-depth customization. I recommend it if you're fine with farming, grinding, and waiting.

It's a bit buggy, but Space Engineers has a fairly active community and dev team to help and keep it aloft. Admittedly, this game tends to be a design and combat simulator, more than engineering.

Scrap Mechanic is a great resource to learn about engineering (to a degree). I definitely recommend this game as something to mess around with or create some entertaining Youtube content.

If you find the right servers, you can get thousands of hours out of this ten dollar game. There's little to do without mods, but it seems to handle modding well for Source.

Definitely my favorite puzzle game to date. I have no problems with the game itself. There is however a distinct lack of engagement after you beat the main story. When you are it, it's good though.

I've recieved plenty of enjoyment over quite a few hours. The story is engaging and (maybe too) intuitive. WAY too few sidequests, but if you mod it, you will get your money's worth for sure.

Closest combat simulation I've seen in my life so far. The AI and team system is pretty exceptional, nearly rivalling Republic Commando.

Wonderful game! You can be pretty tactical, build bases, or be pretty silly.

Hours of fun! Combat system is akin to an FPS, which isn't all that bad honestly. Hitreg is responsive.

This game is for you if you're fine with modding and want more RPG elements than Skyrim has.