Look here http://forum.toribash.com/forumdisplay.php?f=37

There is 3 art events
1 moding event
1 forum based event
2 replay events which are both similar to the opener challenge.
And then there is that sorta in game event which is basically just GM tourneys.

The last in game competitive event was The Haunted Guantlet, which was debatable as It wasn't exactly competitive at all and more luck based.

I struggle to think of the last real COMPETITIVE in game event hosted by GMs, it is a joke that there is so many art and mod and replay events when the in game community is far far far larger than all three of these combined.

So GMs please make some good competitive in game events with GOOD prizes and not shit.