Any software is allowed from game maker to Unreal engine 

After having the bright idea to make a Risk of Rain fangame called Risk of Rain Reunion in RPG in a Box, Twitch streamer Flasholotl had the amazing idea to cram together a bunch of much more experienced Developers on Itch.io to do the exact same thing that he's doing. And thus the Unoriginal game jam was born, where developers from around the world to make entertaining recreations of their favorite childhood (or present day) favorite games! 

Quick note to anyone uploading projects, me and my friends will be reviewing and judging submissions LIVE, so anything violent (swords and stuff are okay, as long as it applies to the source material, this excludes harrasment, encouraging drug abuse, or generally unacceptable content) , or sexual will immediately be disqualified, they would've been regardless but especially since it's live, negative comments towards the judges might earn bonus points depending on how funny it is. 

Unless anyone else wants to judge submissions

the list of judges for those interested are: 

Flasholotl

Toasty

Lagoon

Homunculus Gaming