Hi! Thank you so much! Love hearing when children enjoy the game, it honestly makes me smile. :) I never knew PS4 controllers didn't work and after a quick search it seems UE4 does not support them. I don't have one myself so I am not able to test but I did find a tool that seemingly let's you use them on the PC, I'll just link it to you and you can decide if you want to try it out:
http://ds4windows.com/
I haven't used it ofc, but it was recommended by someone on the UE4 dev forum.
Oh, and I am working on a spiritual successor for PWG called Gilbert's world. It adds a lot more features and I expanded the customization options. I should have a post up on the PWG community soon with some footage. I'm actually really stoked about, I think it's a ton of fun!
I really appreciate sharing your feedback, means a great deal!
Thank you!