If you’re going to suggest something, go for those with open implementations
E.g. WolfRPG Editor, Unity, and LiveMaker are immediately out of the question
For AliceSoft System engines, there are open implementations (system3-sdl2, xsytem35-sdl2, xsystem4-android), but I don’t think this will interest most people
Also, xsystem4 supports only a limited number of old games iirc, so you can’t run doHna:doHna for an example
In this context, there’s rlvm (RealLive Virtual Machine), but it might not be very popular either