u/PotentialKlutzy9909

The other day my friend and I were having this discussion and my friend says since there is so few on the market there must be some significant drawbacks about online 2v2.

What are the drawbacks? I am thinking possibly 1. longer time per game 2. longer queue time, but 2v2 could be much more cooperative and fun, can even play with friends, so why are there so few 2v2 card games?

EDIT: to clarify that I meant online 2v2 only co-op card games.

Complex card games that use lots of different keywords and mechanisms such as Hearthstone, MTG usually don't have huge balance issues (e.g., one type of deck completely overshadows others).

I am wondering what are the design rules or best practices that make this possible?

How do they test before release if the state of the game is balanced, perhaps using simulation?