Lock'n'Chase (c) 04/1981 Data East.
The game is a maze game. Like 'Pac-Man', you're trying to eat up dots while four cops (with the names Spiffy, Smarty, Scaredy and Silly) try to stop you. While you don't have energizers to eat the cops with, you CAN block them off with walls (or better yet, try to trap them in the corners). When you're finished eating dots, there are two exits for you to escape from the cops.

>>> TECHNICAL DETAILS
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Main CPU : M6502 (@ 1.5 Mhz)
Sound CPU : M6502 (@ 500 Khz)
Sound Chips : (2x) AY8910 (@ 1.5 Mhz)
Screen orientation : Vertical
Video resolution : 240 x 240 pixels
Screen refresh : 57.00 Hz
Palette Colors : 8
Players : 2
Control : 4-way joystick
Buttons : 1

>>> TRIVIA
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Jerry Nickerson holds the official record for this game with 78,180 points.
- SCORING -
Dot : 20 points
Hat : 200 points
Crown : 300 points
Suitcase : 500 points
Telephone : 100 points
Watch : 800 points
Camera : 1,000 points
Sunglasses: 2,000 points
Flashlight : 400 points
Key : 3,000 points
Heart : 5,000 points
Money bags : 500, 1,000, 2,000, 4,000 points
Trap 1 Cop : 100 points
Trap 2 Cops : 300 points
Trap 3 Cops : 1,000 points
Trap 4 Cops : 2,000 points

>>> GAME PORTS TO OTHER SYSTEMS
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* Consoles :
Mattel Intellivision (1982)
Atari 2600 (1982)
Nintendo Game Boy

>>> OTHER GAME RESOURCES
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Game's rom.
Machine's picture.