Title: Threshold
Environment: MSX or newer, Keyboard & Joysticks, Musical Memory Mapper Cartridge
Genre: Shoot 'em up
Language: English
Year: 1983
Publisher: SierraVision
Developer: Sierra On-Line Inc.
CRC32 = f91610bc


Note: Start the game with ROM2MMM.COM under MSX-DOS 1/2.


Keys Mapping:

 F5           -  Reset game
 Cursor keys  -  Movement of player 1
 SPACE        -  Shooting
 RETURN       -  Retry current stage
 SELECT       -  Back to selection menu (in game) / Start the game again
 1 ~ 4        -  Select 1 player game level
 5 ~ 8        -  Select 2 players game level


Joysticks:

 Joystick 1   -  Movement of player 1
 Joystick 2   -  Movement of player 2
 Button 1     -  Shooting


Known Problem:

 - Some keys do not match on a Russian keyboard.