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The mod was in the top 100 of Mod DB's 2011 Mod of the Year list and named Multiplayer Mod of the Year 2011. No More Room in Hell was named 'Mod of the Year' for 2011 by PC Gamer magazine, being featured in two issues in 2012.
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After every 2-3 rounds a supply helicopter comes around and drops a supply box the players can unbox for extra supplies. After the 8th or 10th wave the game will bring in the rescue vehicle and the players must get to it in time. The amount of zombies increases as the waves continue, making each wave harder. In Survival, players must survive a series of waves of zombies. They must find the rescue vehicle, which changes every map. In objective mode, players must follow the instructions given by the game. There are 2 map types in the game: Objective mode and Survival. Other players can see it through the coloured username. The game does not have a HUD display on the screen, with no indication of health or ammo. The player has to defend and maintain their shelter against the undead in the hopes of getting extracted to a safe area, using over 30 weapons, ranging from a. The game uses co-operative gameplay, with up to 8 players.
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