Heroes and Generals
Path of Exile.
It's like Diablo, but (in my opinion) better.
If you like classic games, abandonia.com has hundreds of free ones.
And is it weird to anyone else that Negative became more active than ever immediately after leaving?
AdVenture Capitalist
Everlasting summer
I would recommend RuneScape, but I'm not sure how much of it has changed in five years. It was always enjoyable to play on dull weekends.
Quite a bit.
Why?
Oh well. Classic RuneScape will always be remembered fondly by me.
https://www.reddit.com/r/SS13/
Space Station 13
Is Project Reality on Steam?