Kisguri has uploaded a rather decent Columns style game bearing the name of Jewel Fever.
It's effectively the full game, with all the features unlocked - but you only get to play for sessions of 20 minutes
unless you pay for the full version.
Comments from the Author:
"Get ready for Feverish and frenzied Puzzle Action in "Jewel Fever" Rotate the Jewels as they fall into place,
Connect three or more in a row to clear them away! As you progress watch for new Jewels to be introduced that
effect the Board in one way or another!"
Click here to download the game and read its