ARGs for science interests me. It is a pity that all that computer time of Bitcoin is used only to solve difficult math problems. If only that CPU time could benefit science. Eterna is such a game where you solve puzzles to design molecular medicines. It can be found here:

http://www.eternagame.org/web/

There are others also out there. Gamification is indeed a very useful and fun thing. Needless to say, you got my upvote on this article. Thanks.