This utility is not Free. For windows and mac.
Do you remember GifCam? The author of that utility made that and other nice utilities, one of this is P.T.F (Paper Toy Factory) a unique software for creating toys made of paper, it shows you the toys folding steps in 3d animation way.
Ri-li is an arcade game licensed under the GPL (General Public License). You drive a toy wood engine in many levels and you must collect all the coaches to win. You can play on Linux, Mac OsX, Windows and AmigaOS4.
From the Author Site:
To Celebrate the United State’s Birthday and to help out during this Recession, we’ve decided to give away the Magic Toy Chest absolutely FREE! That’s right. Our family themed physics puzzle game is completely free thru July 5th, so tell your friends.
All you have to do is use this coupon code on the Buy Now Page:
“BLKW000TH”
Sometimes it takes a little while to get the hang of a game and start to enjoy it. The Magic Toy Chest is one of those games that doesn’t necessarily hook you in the first 30-60 minutes. That’s why it has received good reviews and a Bytten Gold Star Award, but hasn’t necessarily been selling up to its potential. I just want more people to experience this homage to the incredible machine and hopefully nab some new followers and fans along the way for our next title.
This is educational toy. It allows you to build and control machine in 2D physical world. Uses Box2D for physics simulation, GPC for polygon manipulation and Qt for everything else.