I built a creeper farm recently (illmango's design). On his video, the creepers were spawning pretty frequently, but I don't get as many spawns. (I get some spawns, just not the ratio I was hoping for.) Is this because I'm on an online server? (5-20 players online most of the time) or is there any other problem?

  • Oh, and im on 1.12.2 BTW – Mike van Rijn Jan 14 '19 at 18:58
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    That should be in the question. – Fabian Röling Jan 14 '19 at 19:03
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    1. Yes, having many players online can reduce the mob rate, because even though the mobcap grows with a higher number of players, it's still taken up a lot faster. 2. Also, is the server render distance below 10? The wiki says that that can reduce spawning rates. 3. Have you tried building the same design in Singleplayer? – Fabian Röling Jan 14 '19 at 19:06
  • Hey, thanks for the quick reply, I did build it in a singleplayer world before i built it on the multiplayer server. The spawn rates were much higher on the singleplayer world. I actually think its cuz of the players online, it looks like i get more spawns when its less crowdy on the server. – Mike van Rijn Jan 14 '19 at 19:26

Spawn rates are dispersed among all players that are currently logged in to the server. If you keep an eye on your farm, you will notice a vast difference between when there is 5 players online, and 20.

For each player that is currently online, there is a valid spawning area around each player.

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As an example, let's say the mob cap is 100. If there is 5 players online, then that means ~20 mobs will be spawning near each player, including you at each interval. If there are 20 players online, that will drop to ~5.

Depending on where each player is can affect whether or not mobs can spawn, for example if a player is in the nether, or in a well lit area, this reduces the amount of mobs that can spawn near that player, which can increase your farm's spawn rates. If a player is in a cave, or out in the wilderness during nighttime, mobs will be able to spawn around them, reducing your farm's spawn rates.

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    The mobcap grows with the number of players. I don't know how exactly, but it's something roughly on the order of 100+(20*players), I think. I think OP's main problem is that he expects the farm to work great from a usual AFK spot, but other players are just regularly on the surface/caves/etc. – Fabian Röling Jan 15 '19 at 7:14
  • Let's add the spawn cap mechanics are quite wonky. I've watched quite a few videos of group playthroughs and one player or pair of players would get swarmed by crowds of mobs while the others traveled a world devoid of life... until the game suddenly changed its mind and reversed the situation. – SF. Jan 15 '19 at 12:00

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