We’re about six weeks from the release of the next Metal Gear Solid game, and when it debuts, it’ll owe a lot to one of its predecessors that is turning a quarter of a century old this year.

Metal Gear 2: Solid Snake is now a 25-year-old game (read more about it here). It debuted in 1990 on the MSX2, a Microsoft-backed personal computer that was popular in Japan. This release had many of key elements that you would find in a modern Metal Gear game like stealth, radio conversations, and man-sized air ducts.

We booted up the game to see how it is holding up, and you can watch GamesBeat’s Jeffrey Grubb and Mike Minotti play it in the video below: