Testing of group PvE

Why do people play computer games? Basically - it's fun and socialization. The quality of the implementation of these two components in significant (in my opinion) contribution to the success of the game. The best illustration of combination these factors are group PvE and PvP.
We’ll take a look at group PvE, as more simple object for testing in comparison with PvP. Will discuss the elements of PvE and base terms. What is level-design, what role does it plays in shaping the gameplay. I’ll share my personal experience of testing group PvE, the details of inspections on the example of MMORPG and single player RPG.