F Spacewar! was conceived in 1961 by Martin Graetz, Stephen Russell, andE Wayne Wiitanen. It was first realized on the PDP-1 in 1962 by Stephen I Russell, Peter Samson, Dan Edwards, and Martin Graetz, together with Alan E Kotok, Steve Piner, and Robert A Saunders. Spacewar! is in the public I domain, but this credit paragraph must accompany all distributed versions  of the program.   F This is the original version! Martin Graetz provided us with a printedJ version of the source. We typed in in again - it was about 40 pages long -I and re-assembled it with a PDP-1 assembler written in PERL. The resulting E binary runs on a PDP-1 emulator written as a Java applet. The code is E extremely faithful to the original. There are only two changes. 1)The K spaceships have been made bigger and 2) The overall timing has been special * cased to deal with varying machine speeds.  = The sources are available in a subdirectory called "sources".   H The "a", "s", "d", "f" keys control one of the spaceships. The "k", "l",H ";", "'" keys control the other. The controls are spin one way, spin the other, thrust, and fire.   Barry Silverman  Brian Silverman  Vadim Gerasimov 