MMO Games and database servers? could this work?/what are the complications?

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@eXi;418456

You can’t generalize the Player Limit like this guys.

If you have a game with only a few replicated things and poor graphics, then it can take up a lot of Players.

But if you start building a really large MMO where tons of data is shifted and replicated + good graphics, then we reach the player limit pretty fast, since it shrinks down
to 64.

You should also be aware of Dedicated servers no being able to have more than 1 map open at a time.
Sure you can work with streaming levels, but if you have dungeons with instances, then the servers already reached their end.
They are not designed to be used as MMO servers. If you want to build a good and stable MMO, you will most likely write your own Server application sooner or later.

This is not entirely 100% true with the 65 Player Limit. We have easily got upwards of 400-450 players without any networking changes in the unreal engine.

Of course if you just replicate everything then you are going to run into a networking limit but that does not put a hard cap on how many players you have.

There is zero hard cap on how many players UE4 can handle. The .ini config file has a number that you can easily put at anything you want… You could set it to 100,000 and then you are literly limited by nothing more then the hardware you have the server running on.

UE3/UDK had a limit of 64 players but long gone are them days. So lets please not give out false information about a hard limit of 64 players. This is just pure silly ness. I am look at the MMO Kit using stock everything in blueprints and there tests pushed 400+ players on a server. There is no hard set limit.

Also as far as the one map open on a dedicated server that is true. But there are many MMO’s that use zones and having just a single map per dedicated server is not a problem if you go this approach. (GW2, EQ2, EQ1, just to name a few all use the zone based approach and that works just fine with stock UE4 setup)