Thread:SuperAngryBirdies/@comment-36107211-20200317100146/@comment-36145153-20200321072823

Here's my idea: Crossovers can exist, but can't be babyish, mature without a mature template or in some cases too obscure.

Angry Birds Mario would be fine because it is not babyish but not too mature and is very popular. However, you can't do Angry Birds Peppa Pig because it is babyish. You can't do Angry Birds GTA or Angry Birds COD because they are too mature.