Wayfinder, from the same publisher as Warframe, with gameplay that is commonly described as 'Fantasy Warframe'.
Wayfinder got bumped by Warframe during a few of their livestreams. I suspect they may have underestimated the value of this publicity, because Wayfinder launched into Early Access 3 days ago and was immediately overwhelmed, with the devs saying they are getting more login attempts every minute than what they were expecting in a day. As a result we have 5-hour queue times, with players then getting disconnected within minutes from the poor overloaded servers and subsequently being returned to the back of the queue.
I've been watching the official Discord, where they had to institute a 1 minute slow-mode, which quickly got increased to 5 minutes, and then 10 minutes. Even with each person only able to post 1 message every 10 minutes, the chat is still scrolling faster than anyone could possibly read, and has been going at this rate day and night for the last 3 days. Of course much of this is doomsayers, asserting that such a miserable launch will inevitably kill any prospect of success Wayfinder may have had. But even if only a small fraction of these overwhelming numbers actually stick around to play the game once it's fixed, that will still be wildly more success than most games could ever dream of achieving.
Edit:
Queue times are still high, but they've implemented hotfixes to greatly improve stability for players who do make it into the game, allowing them to stay in and actually play.
I was able to get in 3~ hours last night and actually had a lot of fun. I found a couple of overworld pop-up events where I could spontaneously join with other nearby players to fight waves of enemies and bosses for shiny loot drops. I also ran about a dozen dungeons, which are procedurally generated from a limited number of set pieces, so not a ton of variety but just enough to keep things a bit interesting. There are a lot of options for customizing my hero, including various combat abilities, weapon types, and equipment sets. Various types of enemies which require different strategies to fight, and bosses with more complex routines to learn.
I don't yet know exactly how the late-game will play out, but I am now at least confident that this game will end up being well worth the purchase price.