What is the most challenging aspect of building onchain games?

doing the right thing.
working hard.
being optimistic.
putting the team over the individual.
pushing boundaries with creativity.

Another thing: The whole paymaster thing is never easy no matter how many guides and tutorials are created. It's just the way it is with a current standard. It doesn't help also how many vendor locks you accept when implementing sponsored txs. Just feels dirty to implement and I am trying to stay away from it as long as possible, although this would allow for a superiod non-web3 user onboarding