Hi! Thanks for your message and joining Patient73 Gamejam! Last years edition we only supported Unity 3D, this time we support Godot and Unity, as one of the main requirements is that the game works on the browser, so it needs to be exported to WEBGL.
We don't know if Unreal Engine supplies that requirement! Any doubts I am here!
If the final game can be played on the browser, for example the itch.io submission page, yeah you can use Unreal Engine! Thanks for the information, we will update the description of the gamejam to add Unreal Engine!
