ZoneRoyale, an epic multiplayer io-game that draws inspiration from Zombs Royale (and Build Royale), is a great example of a massive multiplayer io game. This top-down io shooter is reimagined and features battle royale gameplay. You begin with no weapons, and must travel around the map to try and find one.ZoneRoyale, an epic multiplayer io-game that draws inspiration from Zombs Royale (and Build Royale), is a great example of a massive multiplayer io game. This top-down io shooter is reimagined and features battle royale gameplay. You begin with no weapons, and must travel around the map to try and find one.