Just for clarity, does this mean that an adventure with a pre-existing system would be considered part of the “Grab Bag” category?
Correct! I'd make them their own categories, but I'm not sure how I could separate that out without adding more prizes to the pool *Chinrub*
Ayyyyy, I feel you there. Just wanted to be sure, since I first interpreted this as a jam to make adventures rather than engines/systems. No need to adjust anything. ^^