I'd like to try a new game. Feel free to help me choose one!

runescape
Warframe
summoners war

all very fun games that have endless things to do/accomplish.

i haven't tried warframe!

it's interesting - at first it might be a bit hard to understand what's happening or what to do in terms of objectives.
but it's a game you can grind hardcore and max out make money or make beast builds or unlock skins etc etc
or just log in do a 5 minute survival session and log off again