He has written a patch that that adds the possibility of having way more clients connect to one game than you are used to.
We have the hardware and bandwidth to support a decent connection for quite a few clients. We shall patch and package a windows binary and provide the source for everybody who wants to compile their own. If people feel like building some binaries for other systems for us, we would greatly appreciate that

The main question we have is who would be interested and what date is is possible for you guys to take part in such a game. The Aim is to run a full 24 hours giving out us/ca/jp etc. fellow gamers the chance to participate as well - which would mean we would have to focus on a weekend.
We also wish to load some grfs, to especially calibrate NewIndustries, which Belugas has made some amazing work on.
please let us know either by posting a reply to this thread, or by sending us an email: wwottdgd@ammler.ch
We shall keep this thread and my website posted with updates: http://openttd.dihedral.de so keep checking for updates

[EDIT] All binaries will be provided, they can be downloaded from http://nightly.openttd.org/wwottdgd/files/
you MUST have the latest #openttdcoop grf pack and update pack