One thing that players have been requesting in Dying Light is a mode that allows them to play against other players. Taking inspiration from the many Battle Royale modes that have sprung up over the last few months, developer Techland has revealed a standalone expansion for the survival horror title: "Bad Blood"."Bad Blood" blends PvP and PvE styles of gameplay. Up to six players are dropped into an area infested with zombies. You need to evacuate before nightfall, but you have no weapons and you need to find the supplies required to pay for your seat in the helicopter. You'll need to get a blood sample from the zombies, including the larger bosses, to get on that helicopter. The more samples that are collected by all players, the more seats are available in the helicopter, but you still need to pay for your seat individually. This will mean you'll have to co-operate with other players to take the zombies down, but will they then stab you in the back (or vice versa) for those precious samples?At the moment, this mode is available on PC in a closed Global Playtest event. The full expansion will be released next year and the platforms on which it will be released will be confirmed at a later date.