The old record was 515, but it also included the bots, and at that time we had around 100 bots.
This is really cool, of course, but it's also a signal to us that we should look for another server soon, because I don't really want more than 1K players+bots on a server, as it might get too crowded.
However, the server, I believe, can handle up to 2K players and bots plus another 2K animals and NPcs, so for a while we might increase the limit from the current 1K to maybe 1.5K and see how the server handles that.
We also have to buy a new machine, this one is a dual pentium 3, 1Ghz, and 1GB RAM.
The new one will be a dual core AMD64, 3200+, and will cost close to 2K USD (we'll need a RAID and on site customer support, which makes it expensive).
