Crack Down (c) 1989 Sega.
A futuristic city has been over-taken by a powerful, bio-mechanical army; created by an evil scientist in a bid to take over the world. 2 elite agents must plant a series of time bombs to destroy their base and crush the rebellion.
The 1- or 2-player shoot-em-up action is displayed via an innovative split screen that allows 2 players to work either individually or as a team. A timer countdown timers ands to the tension. Time bombs must be set by running over areas marked with an 'X'; while machine guns and cannons can be reloaded by finding the ammo caches that appear on each level. If ammo runs out, players must result to punching and kicking to defeat opponents.

>>> TECHNICAL DETAILS
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Sega System 24 hardware
Game ID : 317-0058-04d
Main CPU : (2x) 68000 (@ 10 Mhz)
Sound Chips : YM2151 (@ 4 Mhz), DAC
Screen orientation : Horizontal
Video resolution : 496 x 384 pixels
Screen refresh : 58.00 Hz
Palette colors : 16384
Players : 2
Control : 8-way joystick
Buttons : 3

>>> TRIVIA
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There is a reference to the arcade game 'Shinobi' : the 'Hiyaaa' sound that Ben and Andy exclaim after detonating a superbomb is the same sound as the Shinobi ninja magic sound. Also, 2 of the 4 superbombs also appear in Shinobi. Look closely, the eletricity bomb and the whirlwind with homing sickles bomb are here too.
At the end of scene 2 act. 2. There is a machine that produces electrical sparks. On top of the machine can be read : 's-4635 system24'. This is a reference to the arcade board this game runs on.

>>> GAME UPDATES
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The US version is slightly different, it has the 'Winners Don't Use Drugs' screen.

>>> TRICKS AND TIPS
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* Luring an enemy in a line of fire causing it to die by its own sort will earn you double this enemy score.
* Shooting more enemies in a row will give you additional points (4x) per enemy.
* Secret Bonus ('Shinobi' Bonus) : finish the stage without using a weapon (punch or kick only). Shinobi bonus will earn you 10,001 extra points.

>>> GAME PORTS TO OTHER SYSTEMS
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* Consoles :
Sega Mega Drive (1990) : This version was never a great succes due to several reasons. It was actually a poor arcade translation and suffered from severe slowdown causing it a cruel joke to play. Here are the most remarkable differences summarised.
1) The whole introduction and subscreens are altered. There are no more graphical intro screens, just plain text in a sky. Subscreens are very different.
2) level 3-3 is missing and has been replaced by a stage that was not in the arcade.
3) The signs 'danger' on the roof stage are still in Japanese language, even in the Euro versions. The board that you have to shoot down in order to make a way to the exit shows a picture of Playdoc, while the arcade had Prayboy. They also take more hits to fall down than in the arcade.
Censorship perhaps?
4) Ben and Andy carry the bazooka once collected. In the Megadrive version this can't be seen.
5) The map was done horribly bad, just a very blocky maze with the marked spots and the player in it, making this map look worse than an average 8-bit game.
6) The enemy details are no longer shown after completing the game, but are now shown on the right side when player 2 is not joining.
7) There is only one type of superbomb.
Nintendo Wii (2007, 'Virtual Console' - MegaDrive version)
* Computers :
Amstrad CPC (1990)
Commodore C64 (1990)
Sinclair ZX Spectrum (1990)
Commodore Amiga (1990)
Atari ST (1990)
PC [MS-DOS, 5.25''] (1990)

>>> OTHER GAME RESOURCES
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Game's rom.