GridHack

WHY do the colors on colorblind mode NOT MATCH the colors indicated on the bottom of the screen? WHY would you choose red and green to be possible colors in any case?

I couldn't figure out how to get past the first stage, until I learned that the SHIFT key makes you move two tiles at once. I must have accidentally pressed SHIFT because I could not get the third pentagon. I finally figured it out, but it's something that needs to be noted in the tutorial or others will get frustrated as well.

a way to go to the next level without having to take my hands off the keyboard would be nice

Great game!

After pressing SHIFT you are only able to move two tiles at once... (Another SHIFT does not revert this) Nevertheless, I enjoyed playing :)