Developed this a little while ago but I wish to demonstrate Unscramble.  It's a simple time-waster.  The computer generates a secret code and you try your best to guess it.  You will be shown how close you are to cracking the code.  The best part is it's only $3.00.  Windows only:

http://kjsisco.itch.io/unscramble

Sounds like a classic, but don't you have a screenshot for your post like the rules say?