*Prepares a long list of mmos i've played* Guild Wars 2 is a pretty good game that you can play pretty casual on and off, and has pretty good story and unique combat system. I'd highly suggest this one if you don't like the huge grind of mmo's (EXP is earned through map completion, so you'll never be killing the same mob or doing the same thing at all, which is pretty fun as you get to explore the whole map and see the beautiful scenery and details put into the game.) Wildstar was also mentioned above, which is nice. Wildstar still uses the usual quest system in order to level up, but I found it really fun to play, and especially is with friends if you manage to convince some people. Also, the wardrobe system or costume system is pretty well done, and the map is just absolutely stunning, I would say it would rival Guild Wars 2's maps, but they're both really good. Trove is a pretty unique experience, too. I thoroughly enjoyed it, but it gets very grindy in the end-game, but It has a ton of content and things to do. It does a great job at using voxels for its graphics and can create very detailed models with just voxels. Best of all... A LOT OF THE THINGS IN TROVE ARE COMMUNITY MADE! You can easily submit your own models if you wanted to, and if they're good enough, they might just be entered in the game. Below are the ones I haven't actually tried yet or played, or maybe not played enough of, but I've heard very very good things about. Path of Exile - Like Diablo? Similar to Diablo in many ways, such as randomly generated maps and combat system. Planetside 2 - Huge open-world dogfights and stuff. Also, sci-fi genre! (I think?) Tera - Mentioned above, but it has really impressed me when I played a good amount of it. Stunning graphics, nice combat system so gameplay doesn't get dull, and flashy skills! Neverwinter - Hard to explain, pretty alright combat system, large map, and stunning graphics. Nosgoth - Humans vs Vampires PvP game, heard it's really fun because certain humans or vampires have unique playstyles and abilities, so check that out too. Vindictus - Yeah yeah I know, it's a Nexon game, so it's bound to be P2W, but it's pretty good, and I feel is definitely better than Maplestory. Good amount of classes to choose from. Elsword - I was actually a beta tester for this game, but I haven't touched it ever since, but go check it out. It was pretty fun when I played it in beta so it's bound to captivate you some way or another. I can't think of anything else, but that should be a good amount to choose from. Happy gaming!