Some users dubbed this game the "Expensive Planetarium" or "Shootout-at-El-Cassiopeia", and it was developed on a mainframe in 1961.  
The controls for this program were improved after parts were raided from the Tech Model Railroad Club.  The sine and cosine routines for this program were stolen from the DEC Corporation, although DEC later used this program as a final test before shipping new PDP-1s.  Early versions of this program had random variance in the trajectory of torpedoes.  This program was the brainchild of Slug Russell.  Users of this program controlled either the Wedge or the Needle.  Dan Edwards added a (*) gravity module to the star in the center of this program, and Shag Garetz gave users the ability to hit the hyperspace button three times.  Some users dubbed this game the "Expensive Planetarium" or "Shootout-at-El-Cassiopeia", and it was developed on a mainframe in 1961.  For 10 points, name this first ever videogame.
The controls for this program were improved after parts were raided from the Tech Model Railroad Club.  
Spacewar! [accept Expensive Planetarium or Shootout-at-El-Cassiopeia before mentioned]