It's an early access game, but you need to actually buy it to play it. Right now it's 19.99 USD on Steam. Here's what they wrote about what to expect during early access.
Why Early Access?
“We want the game to be properly tested in the field while we implement the core features. Wolcen: Lords of Mayhem is an ambitious project and we want to share its evolution with the Community, gather feedback, and improve the game accordingly. The game has a lot of replayable mechanics to test as well and we want to make sure that these mechanics are appreciated and polished.
An Early access is a perfect way to achieve these goals.”
Approximately how long will this game be in Early Access?
“It is important to us that Wolcen is properly polished before its release. We hope to move to Beta during 2018. We will keep the Community informed on important future dates for Wolcen with news on Steam, the Official website, and on the Social medias.”
How is the full version planned to differ from the Early Access version?
“The Early Access version of the game will include the major gameplay features. The storyline, main quests, side quests, and other contents will only be available once the game is released.”
What is the current state of the Early Access version?
“The game presently allows you to visit an alpha quest zone for 3-5 hours, leading you to level 13-14.
You can then reach level 20 and explore the world, farm for equipment in the bounty’s infinite dungeon, make PVE challenges in the arena for exceptional rewards, or participate to the daily dungeon and compete with other players for the best time.
You can access around 400 skills in the Passive Skill Tree split in 11 archetypes so far (on 20 planned). Wolcen doesn’t force you to choose any class, so feel free to mix these archetypes for a customized experience of the game!
Around 20 spells are implemented (signature skills excluded) and more are coming. These spells can be improved as you use them and have various cool effects to increase their power and efficiency.
The environment will react to your actions and you can perform elemental combos to affect your enemies.”
Will the game be priced differently during and after Early Access?
“Yes. As the content gets implemented, the price of the game will increase progressively.”
How are you planning on involving the Community in your development process?
“The community has various ways to communicate and share with us, on these last 2 years we have been able to improve the game a lot thanks to the community feedback and reports.
Official forums and Steam forums can be used to express issues, ideas, feedback in general, or even report bugs.
Trello is used for the Roadmap, Suggestions and the Bug tracker.
We also gather your reactions from various social medias (Facebook, Twitter, Instagram, Youtube, Twitch, streamers in general). If we can, we participate to streaming and provide answers to some questions.
Finally, all developers are on Wolcen’s official server on Discord.
All the useful links to communicate with us are available here: https://wolcengame.com/forums/topic/usefull-links-for-wolcen/.
We have a dedicated Community Manager to take care of our Community and ensure that while we develop the game we all stay connected to your needs, your opinions, and what you expect from us so our great game will also be your great game.”