10 Terrifying Video Game Enemies You Couldn't See

10. The Guards With Otacon's Stealth Prototypes - Metal Gear Solid

Throughout much of iconic PS1 release Metal Gear Solid, Snake is outnumbered, outgunned and on the defensive. Tactical espionage action is the watchword of the series, after all.

As the adventure progresses, Otacon demonstrates how very useful his camouflage technology can be, and it’s a worryingly long time before he hits upon the idea of bringing Snake one of his prototypes.

Around this time, Snake is on his final approach to the base where Metal Gear Rex is being stored. He encounters a cargo elevator that appears to be faulty, with its weight alarm buzzing even though our gravely-voiced antihero is in there alone.

In a confused Codec conversation, Snake mentions this to Otacon, who also muses about the fact that his prototype stealth suits were all missing when he went to retrieve one for Snake.

With that, the penny drops, and the player discovers they’re sharing a very small area with a band of four invisible and very angry foes. They can be seen only by the slight shimmer as they move, and they can take a lot of punishment to bring down. It’s a very tense and unexpected moment.