I first found Magic Pen, a very addicitive online video game, using Stumble Upon. It’s quite addictive and perhaps very useful in teaching us how to manipulate shapes like rectangles, triangles, circles and squares in a useful fashion. It’s a drawing game first. But it’s also a common sense meets strategy online video game. You must draw shapes in order to move another shape off the screen to move to the next level.
It’s not going to be a game you play with mindless intentions. It’s a thinker’s game. You have blend well thought out strategy with drawing and common sense to advance level by level into more difficult phases of the game. You can visit it at http://magic.pen.fizzlebot.com/. It’s quite additictive and rewarding at the same time. It’s a fun learning tool for kids and adults, too. If you don’t draw your rectangle or square correctly it will tip over. That is, unless you want to draw them that way so they’ll tip over and push the goal object off screen. Drawing circles isn’t easy but if you do it right you are rewarded with a smooth roll.