We have found that most game birds go really well with rich fruity Pinot Noir wines. In general reds seem to go better with the earthy robust nature of game and the accompanying rich game stocks than white wines do.
Australian Shiraz or Merlot are our standard choices when we want something we ‘know’ will be good but any robust wine such as Grenache, Zinfandel and Pinotage have also proved successful in the past.
With boar we had a great Rioja last year and it went superbly well.
To summarise, with game you are basically looking for a fruity wine that has only soft, rounded tannins.