i do not really enjoy any new games, my PC can't handle them and they cost really alot
http://steamcommunity.com/app/219890Antichamber, short game that will probably remind you about portal (everyone played portal and portal 2 right?
)
game messes with space and perspective, and tryes to trick you a lot, also contains hard puzzles, some of them actually avoidable
i really enjoied it, it also has alot of secrets
(only single player as far as i know)
i also like Don't starve, not sure about new "Don't Starve Forever"
it is survival game where you always need to do something to survive
apart of survival mode there is an advanture mode with more interesting and challanging worlds
also it has seasons Summer and Winter and that adds alot to a game
but i tired playing Don't starve, it is actually appeared to be to hard for me, or maybe i am just greedy and always try to take more than i can handle