+Thinks outside the box, for a puzzle game.
+Challenging, requires the user to improvise under a strict timer and spaces.
+High scores table with online leaderboards motivates people to play more.
+Many levels to complete for extended playtime.
-Annoying music, but can be turned off.
-Very little graphical work outside the interface.
-Was over a bit soon, timer runs out quickly.
*Provide bonuses for completing levels within a certain time or for extra spaces.
*Add a penalty for resetting the grid.
*A brief tutorial level would be nice to start things.
A very fun and original puzzler, placement of the shapes within the margins reminds me a bit of how you must arrange blocks in Tetris. Will definitely recommend to friends and a collection.