A simple video game demonstrating the capabilities of SMIL for interactivity. Bitmaps are adapted from Earth_and_moon_3d_komet.jpg, Castle_Romeo.jpg, Earthmap1000x500.jpg and Earthlights_dmsp.jpg at Wikimedia Commons.
File:Earth_and_moon_3d_komet.jpg, File:Castle_Romeo.jpg, File:Earthmap1000x500.jpg, File:Earthlights_dmsp.jpg
cmglee and Dachris, United States Department of Energy, jimht at shaw dot ca, NASA