I played/know most of these games, so yeah, I'd say they are relatively popular.
The hangman game itself is quite basic indeed, but it works well. A bit of animation would do wonders, as well as a background. Maybe search for some free sprites, too. Still, well programmed.
One addition I'd like is to let me guess every game once (in a random order) before throwing the same at me twice. Yes, I know, that's a bit harder to achieve, but you just coded hangman, you can do this.
@ Andyhu, Misery: You might want to check under 'instructions'. It sure as hell IS a game. Maybe not very exciting, but I give it 5 for concept. And for turning Yet Another School Assignment into a gaming classic.
It should be possible to take a chest you didn't take during the fight when you win. But a great game nevertheless, one of the few strategy RPG's i really enjoy :)