#3920
RPG Maker (AKA: RPG Tsukūru, RPGツクール, RPG Tkool) is the most popular 2D RPG games development engine developed by Enterbrain company from Japan. It's both simple enough for a child and powerful enough for a developer. The whole series mainly includes: RPG Maker 2000, RPG Maker 2003, RPG Maker XP, RPG Maker VX, RPG Maker VX Ace, and RPG Maker MV.

#3643
GameMaker Studio (GMS for short, formerly called: Game Maker, Animo) is a very powerful and popular cross-platform, multi-genre game development engine (GDE)/game creation system (GCS) for both entry-level novices/amateurs and seasoned game development professionals. It was written in Delphi by Mark Overmars from Netherlands and first published in 1999.