How many people can play multiplayer factorio together?

I played factorio with friends yesterday, we were able to play with 5 people together in the same map very consistently, but the sixth player kept timeouting and making the other players lag.

We're blaming player 6's computer for now, and are hyped for what looks like a 8+ player game this weekend.

It that even possible? Is there a hard limit on the number of players? I couldn't find one. We're not really worried on the server's side, it has plenty of resources and bandwidth, but we wonder if maybe the game doesn't support 6+ players together.

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3 Answers

The hard limit is currently 255. We never tested it for more than 12 people on local network so different kind of problems might arise when lot of people play.

Edit: Since 0.14 the limit has been increased to 65535 and it might actually be possible to get that number of players online with exceptionally good network connection.

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The hard limit for number of players playing together is 65535.

Because it is in early access, some content may be buggy, so we cannot say for sure exactly how many players will be able to play together (this should also increase over time).

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0.14 update massively improved multiplayer. On experimental branch there was several multiplayer games with 150-200 players.

You can watch streams of it on youtube playlist:Factorio Mass Multiplayer