Board Thread:Game Discussion/@comment-24007468-20131108142718/@comment-11490363-20131111050031

No one knows for sure how they do the randomness, but it seems likely that there is just a percentage per net on capturing the boss, with no limit as to how many can be captured over all.

If you read the description of the netting, it does somewhat imply that harder levels have a higher chance, but it is hard to know if that is true or not.

I believe the chance is 5% for H5-10 on netting the EVO boss.