Boulder Dash (c) 1990 Data East.
An updated version of the classic rocks-and-gems game. Same gameplay applies, collects gems while pushing rocks and avoiding enemies.

>>> TECHNICAL DETAILS
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Main CPU : 68000 (@ 12 Mhz)
Sound CPU : HuC6280 (@ 3 Mhz)
Sound Chips : YM2203 (@ 1.5 Mhz), YM3812 (@ 3 Mhz), OKI6295 (@ 7.757 Khz)
Screen orientation : Horizontal
Video resolution : 256 x 240 pixels
Screen refresh : 57.41 Hz
Palette colors : 1024
Players : 2
Control : 8-way joystick
Buttons : 2

>>> TRIVIA
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Released in May 1990.
This game is a port from an original game designed at First Star Software by Peter Liepa and Chris Gray for the Apple II computer.

>>> TRICKS AND TIPS
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* Escape Trick : There is an escape mode that allows you to go through the stones and any moving walls. To activate it, press the A and B buttons at the same time while moving. There is a cost involved, though - it deducts 20 seconds for each stone or wall passed through.
* Boulder Dash Part 2 : There is a way to access Boulder Dash Part 2 from the attract mode (Part 2 has the same levels, but increased difficulty). To access it, press the following key sequence while the player list is onscreen : A+Up, A+Down, Left, Right.

>>> DESIGNERS / PROGRAMMERS / STAFF
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Planner (First Star Software) : Peter Liepa, Chris Gray
Arrange : Mr. Inaba
Graphic designers : Miss Yamaguchi, Miss Shiraiwa, Mr. Yokoi
Sound : Miss Hara, Mr. Fuse
Hard : Mr. Mitsui
Programmers : Mr. Ishiguri, Mr. Sakai, Mr. Ohta

>>> OTHER GAME RESOURCES
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Game's rom.