Free game download for PC or Mac from MIT to give you perspective on understanding the speed of light.
A Slower Speed of Light has been tested on computers with the configurations listed below.
• Intel Core 2 Duo T9900 or Core i7 (2.8GHz clock speed)
• Windows 7 and Mac OS X 10.7 (Lion)
• AMD Radeon HD 6970M/AMD Mobility Radeon HD 4850/Nvidia GeForce 9600M GT
• 8GB RAM
Some users have reported that the game may run on Windows XP and 2GB RAM. A known bug will crash the game on computers with some Intel graphics chipsets