I thought the 54mm Napoleonic game laid on by Victrix, looked absolutely stunning (all pictures clickable).
It was clearly set somewhere in Spain, with a stream running down the centre of the table, and some stunning scratch-build buildings.
There were a couple of hundred figures a side, mostly from the Victrix ranges, but also a few that I think are Italieri. They used a simple set of Victrix rules.
The figures were organised into battalions, each 20 or so strong, each figure mounted on a 40mm base (I'd have been tempted to use 30mm frontage, but that's just me).
Above, there was a pretty Portuguese battalion on the British left.
The French, below, looked splendid. That's a converged Grenadier battalion in the foreground. THe second photo has a converged battalion of Voltiguers,
The French columns were screened by Voltiguers. The column on the right was Italian.
Shown below, there was a pretty column of red-coated Swiss, marching though a village.
Finally, below is a very striking unit of Italieri Malmelukes.
I didn't hear about prizes, but if this participation game didn't win anything, I'd be very disappointed! Much kudos to Victrix.