Konami has confirmed Metal Gear Survive will require a constant online connection and include a microtransaction system.
As reported by GameSpot—after attending a preview session—the survival action game will require you to have an internet connection at all times, even if you’re playing solo. According to Konami, this is to “support a seamless integration between single player and co-op,” and enable the studio to deliver “ongoing content post-launch.”
Additionally, Metal Gear Survive will have microtransactions through an online store where players can use real money to purchase in-game currency that can be used to buy things like Boost Passes. The virtual currency can also be acquired by simply playing the game.