Stacked Odds

Create columns adding up to 21 as long as you can. Run out of space on a column and it will be removed from the game! Made completely by one person in under 48 hours for Ludum Dare 42. (visit ldjam.com to find out what that means). 

Controls

W/Up Arrow
A/Left Arrow
S/Down Arrow
D/Right Arrow
Escape - Pause
Space - Add a new block