17 game modes!
I'm into rubber band guns rather than Nerf guns which is why I compiled this list of rbg game modes. I thought they could quite easily work for Nerf guns too. It's a 3-page document so a bit much to write in full, but here's an excerpt:
Go here to download the full document:
Many of these were inspired by existing game modes but I'm hoping it may contain enough ideas to be worthy of your time!