.SPACE INVADERS INV78.EXE --------- White, green and black screen. Press SPACE to start game. l-ctrl go left l-alt go right r-shift fire ---------------------------------------------------------------------------------------------- CHAMP INVADERS -------------- Arrows move Ctrl fire The demo version stops working if you have over 3000 points at the completion of a level (usually the 3rd). You can hack the game to play for a lot longer. COPY INVADERS.EXE X DEBUG X E F13C: 0B -> 7B W Q COPY X INVADERS.EXE This lets you score up to 31672 points, which is extremely unlikely. ---------------------------------------------------------------------------------------------- SPACE COMMANDERS ---------------- See CGA rid ---------------------------------------------------------------------------------------------- SPACE COMMANDERS II ------------------- See B&W rid ---------------------------------------------------------------------------------------------- KURT'S SPACED INVADERS! ----------------------- Keys P Pause J Joystick on/off ^J Calibrate joystick F1 Help F2 Display high scores F3 Options (only from main menu) F5 Sound F7 Colour/B&W F9 DOS shell F10 Quit to menu Esc Quit to DOS ---------------------------------------------------------------------------------------------- CLONE INVADERS v3.5 and 4.0 -------------- Version 4.0 is preferred as the colours are proper VGA, and the player bullets go much faster. All versions - hold down the fire key for rapid fire. Experiment with the speed settings and the turbo button. The game is very sensitive to processor speed. The high scores are stored within the exe file. To stop this from occuring, make the exe read-only before running. Adjustments via environment variables (for v3.0 to v3.6) SET INV_DISPLAY=CGA force CGA SET INV_DISPLAY=EGA force EGA SET INV_SPEED=SLOW 8088 SET INV_SPEED=MEDIUM 80286 SET INV_SPEED=FAST 80386 Where the settings are stored: Version 3.5: Score - Offset 38-3B Version 4.0: Score - Offset 38-3B; Video Type and Speed - Offset 46-48