fzammeti: Have you tried "repackaging" the game? You could change the title, "cover" art, and sell it like a game pack. Highlight traditional games that are included as a marketing hook (casual gamers are probably more likely to buy it that way). Sure it's not set up like a traditional game pack, but it might attract people that K&G wouldn't.
BTW, I haven't played the game. I assume it's a collection of a puzzle and mini-game type games that are unlocked as you play. If not, please ignore my post.