Due to hardware limitations on the MSX2, Metal Gear emphasized stealth gameplay rather than direct combat, creating a unique and engaging experience.

Metal Gear Solid popularized 3D stealth action, using the PlayStation's capabilities to create immersive environments and complex enemy AI.

Metal Gear Solid 2 introduced advanced environmental interaction and physics, allowing players to manipulate objects and use their surroundings to their advantage.

Boktai featured a solar sensor built into the cartridge, requiring players to expose the device to sunlight to power up their characters. This innovative mechanic linked the game to the real world.

Metal Gear Solid V introduced open-world gameplay and base-building mechanics, allowing players to explore vast environments and customize their operations.

Death Stranding features the "Strand System," a unique online mechanic where players can indirectly interact with each other's worlds by leaving behind structures and resources.