Just following up on this - this comment was my initial excitement at seeing some real Forth-based thing. I've had time since then to follow up and read the wikipedia page for ChipWits now and the blog post: the original game looks very cool. The logo from the manual on WP is so great.
I'd been making a list recently of games (old and new) that have puzzles and programming type stuff in them. It's going on the list! I could very well get on to it next after I'm finished the ketman assembly "game" (although it's not really a game, I suppose).
I hope the new ChipWits does excellently!