The best choose your own adventure I've played - the choices feel important and engaging, and there are enough features that it doesn't feel like a book

For me this game fell somewhere between Legend of Grimrock and Legend of Grimrock 2 - not quite as good as the open-world of the second game, but Vaporum's voice acting made it more of an engaging experience than the original Grimrock.

Hammerfight [Steam store page]
I love the concept of flying ships with flails and hammers doing battle - but having to constantly rotate my mouse to swing my hammer is tiring at best. Theres also a ton of unnecessary text/story when the gameplay speaks for itself.

This nicely polished sliding puzzle game is fun yet challenging. Solving the levels in the correct amount of moves is simple, but the time limits are amazingly difficult if you choose to attempt them. A huge amount of different levels to complete

Machinarium [Steam store page]
Nicely drawn point and click - but the puzzles are too obtuse for their own good. The hint button is hidden behind a long minigame with a key that shoots bullets (which the game doesn't mention and the minigame can't be completed without them)

This is a fun but easy Diablo style dungeon crawler. It features quick travel via portals and spells, as well as a pet to sell items while you continue killing. Additionally there is a shared chest to transfer valuable items between characters