Cool, ive also heared a lot of good things about AGS further it seems to have a lot of extensions/plugins, ive even red something about 3D abilities, thou im not sure ive that has already been released or is to come ...
Ive also found another tool which seem to be similar, its called, it has a free edition too, im not sure how much its limited, its calledAdventure Maker, have you ever heared about it?
Phaser seems also interesting enough, but from what ive seen you at have to pay for the editor or something like that phaser 3 if im correct,