User blog comment:Karina Frost/MGE x RPG Maker VXA/@comment-26466323-20150804221202/@comment-25035274-20150805182620

Which means you'll probably need to download the VX ACE RTP, but once that's done you'll just have to run the game.

That does not mean you should go grap the RTP right now, because it can take quite a long time to build a game from scratch.