Metal Slug 4 and 5 (2 Pack) for PlayStation 2

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Description:
In Metal Slug 4 you'll take the battle to the air, sea and land as you once again battle Morden's forces. In the year 20XX, a cyber-terrorist group has struck out at the world by unleashing a computer virus to hijack the world's militaries. You'll fight to stop the distribution of the virus before it's too late. Then move on to Metal Slug 5, where the secrets of next-generation Metal Slug technology have been stolen. Lead your team into the "Corridor Of Fire" to recover the secrets and destroy the paramilitary syndicate known as the Ptolemaic Army.