Open collaborative project using the Game Maker Studio 1.4 software 5 full licenses exporting game directly to Windows desktop, Mac OS X, Ubuntu, Android, iOS, Microsoft UWP, HTML5, PlayStation 4, and Xbox One. Story planning software 2 full licenses to ArticyDraft (Used by Bioware, CD Projekt Red, Ubisoft, EA, Rocksteady games and many more).
Single player
Multiplayer ideas include faction map, defense base building & offence base looting.
If your serious about games creation reply.