"A bit of software for Windows and Mac computers.
Create stop-motion movies from webcam snap shots.
Add an mp3 soundtrack.
Export as a .flv video for upload to YouTube.
Watch the terrible video I made to see how it works."
Atmosphir is a free video game / creation tool for Mac & PC. Design mode lets you create enormous 3D platforming levels filled with fun gameplay elements like power-ups and fireballs, while Play mode lets you explore through the thousands of diverse user-created challenges being uploaded every day.