I can highly recommend Guild Wars 2.
Been playing since its launch in 2012.
One of the best MMOs out there!

The core game is truly free-2-play!
In case you like it, you can buy all expansions combined for about $60.
And to top it all off: NO MONTHLY FEE!
Give it a try ;)

Feel free to add me ingame if you have questions about GW2.
► Tibran.6429

Review Update - September 2022

No Man's Sky is definitely one of my favorite games. Even after 500+ hours, there are still things to explore and Hello Games is still actively developing the game.
But of course, NMS also has its flaws. Gonna list a few things NMS does good and some... not so good...

Good things:
● ...a seemingly infinite universe to explore
● ...a huge selection of starships, freighters & flee-ships
● ...the option to upgrade low-tier weapons/ships to the highest tier
● ...base-building (always a plus in my books)
● ...seasons, which are designed for beginners & veterans
● ...really nice crafting system
● ...the ability to build farms and not only rely on your mining laser
● ...interesting quests (depending on ones personal taste of course)
● ...a community hub with community missions
● ...VR support

Not so good things:
● ...planets, fauna & flora get a bit repetitive after a while
● ...currently no way to modify the looks of your starships
● ...you will encounter some odd glitches, so make sure to save regularly
● ...the early grind can feel a bit unrewarding
● ...some older systems might experience some technical issues (I had to modify graphic settings via notepad++ in the NMS folder)

Conclusion:
If you like exploration, base-building & collecting starships, No Man's Sky is the game for you!
NMS has a lot of content now (compared to launch) and with each new update comes a new season, which is the ideal to start playing.
Veterans get a new experience and new players get a little push. Also, you can keep your season character after you've finished the season!
I can highly recommend No Man's Sky!