As far as I know, AGD Interactive (
http://www.agdinteractive.com) created their Quest for Glory II VGA Remake and King's Quest I and II Remake with Adventure Game Studio (
http://www.adventuregamestudio.co.uk). Mark Pay created The Spirit Engine games (
http://thespiritengine.com) with Multimedia Fusion (
http://www.clickteam.com/eng/index.php), either MMF or MMF2. Srehpog created Ark 22 (
http://www.dur.ac.uk/david.smithson/ark22.htm) with Game Maker (
http://www.yoyogames.com). And of course Amanda Fitch from Amaranth Games (
http://www.amaranthia.com) created Aveyond series with RPG Maker (
http://tkool.jp/products/rpgxp/eng/) although probably with RPG Maker 2003 rather than with RPG Maker XP.
I have no experience with any of those software. Just spill the beans, as you said