Visionary Realms aren't exactly keeping their pre-alpha footage a secret but two hour long dungeon runs aren't common either. Pantheon: Rise of the Fallen is aiming to go for the ''classically-spirited'' MMO style, like EverQuest.
Things weren't looking good following Pantheon: Rise of the Fallen's failed Kickstarter campaign, but Visionary Realms are developing the game at a steady pace. Pantheon is still in pre-alpha but some of the Kickstarter backers can play and stream the game. Such is the case in the video above, where the streamer CohhCarnage is running through a dungeon in a group with five game developers.
An interesting thing about this particular bit of gameplay is that the dungeon they're running is not an instance. By all standards it's a dungeon just like in any other game - you need a group of people in order to complete it, you need healers, tanks and dps. What sets it apart from the regular MMO dungeon formula is the fact that other parties can jump in any play alongside yours at any given moment.
Pantheon: Rise of the Fallen has plethora of interesting features other than the open dungeons. For example, there is the dynamic AI that will its behaviour based on your party's composition. Acclimation and climbing are another two immersion tools unique to this upcoming MMO. These are self-explanatory, since you will need to acclimate your character to certain extreme environments such as a blazing forge in a freezing cave, and lack of the climbing skill can prevent you from reaching certain areas.
Pledges continued after the Kickstarter campaign ended and this is how other people are getting into the game. In case you decided you want to try the game out for yourself, please note that the game is still in pre-alpha and as such it will have glaring issues such as missing textures and non polished animations.
Missing textures were only mentioned by the devs in the video above but animation issues can be seen through gameplay since characters sometimes seem to glide instead of running. That being said, these are issues that are more than likely going to be fixed before the game's launch or even open beta.