Sinistar
                     HIDDEN MESSAGE: Programmers screen credits 
                      - similar combo trick as Robotron or Stargate (Check Williams 
                      Arcade Classics CD-ROM: SINSND folder  retsae.gge 
                      text file!):
                      1. Set to pricing mode 3 (wont work on free play)
                      2. One ship per game (not required but easier for trick
                      3. Coin up 1 credit, then start game
                      4. Bump into asteroids
                      5. Press FIRE button 7 times
                      6. Dont do anything else  get killed. If you 
                      hit or shoot something, go back to #4
                      7. With no credits, press 2-player button 3 times
                      8. Coin up 1 credit, then start game
                      9. Press SINIBOMBS button once
                      10. Coin up 3 credits
                      11. Press SINIBOMBS button once
                      12. Get shot
                      13. Press 1-PLAYER button with no credits
                    BUG: Extra ships - Getting killed twice is 
                      possible (before being crushed by the Sinistar, 
                      and still spinning in its mouth) get shot by a Warrior. 
                      If you have more than 1 ship left, you will lose 2 ships; 
                      if you have 1 ship left, the programs ship reserve 
                      counter resets to 255 ships!