Adventure Game Studio
Used by 4 peopleadventuregamestudio.co.uk ↗

“I'm programming The Crimson Diamond in Adventure Game Studio 3.3.5.”
Julia Minamata Interview, Indie game dev, streamer · via Uses This 
“My first foray into game development was with Adventure Game Studio, which lets you quickly set up some characters and backgrounds and build an adventure game with very little experience.”
Dave Lloyd Interview, Game developer (Crawl) · via Uses This