FORTH is a glorious little language. You can get a bunch done in a very small amount of code. You can get a running FORTH system working, from scratch, very very quickly (on bare metal, maybe a couple of days).

That said, I've seen very few projects successfully in FORTH. There are a few, but not many.

Additionally, historically the language has been a lightning rod for kooks and bad engineering practices. All of the experience I have of FORTH in the video game industry was watching people serially fail (they would typically get twisted up in their FORTH environment, get obsesssed with the FORTHness of this and that, and forgot to ship a title; more mature users would run into intractable organizational and performance problems that forced them to ditch the language).

But it's still a great language, and a worthwhile thing for software practitioners to know and play with.