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You play as Captain Addis, a former officer in the US army during the Vietnam war. Now, twenty years after the war, you are sent on a mission to follow the Ho Chi Minh trail and to rescue American airmen that were left behind.

In this action game, you navigate your character in top-down view and continuously fire at enemies, turning him in different directions, since he doesn't always face the direction he is moving in. You can for example walk backwards, firing at the enemies who pursue you. Enemies include not only various types of gunmen, armed with rifles, flamethrowers, or grenade launchers, but also tanks and helicopters. You can blast open crates to find ammo and supplies. Defeated enemies also leave you items.


Caliber.50 Genesis Title screen
Caliber.50 Genesis Killed by two blue guys
Caliber.50 Genesis Making your way through the plane landing area
Caliber.50 Genesis Tanks are a troubles.

Alternate Titles

  • "Caliber Fifty" -- Alternate in-game title
  • "Cal .50" -- Title Screen title

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The Press Says

Digital Press - Classic Video Games Genesis Mar 20, 2005 4 out of 10 40
All Game Guide Genesis 1999 2 Stars2 Stars2 Stars2 Stars2 Stars 40
Sega-16.com Genesis Jan 31, 2008 3 out of 10 30


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Japan release

A Japanese release of the Genesis/Mega Drive version was planned for release in December 1992, to be published by Visco. It was cancelled before release, leaving the game only released in North America.
Contributed to by 666gonzo666 (37298) and אולג 小奥 (168604)