1+1 Fries Duel Facebook game was designed for McDonald's Hungary to promote their 1+1 offer, consisting of a small fry with another product of your choice.
Execution: the point of playing 1+1 Fries Duel was to steal fries from your Facebook friends. After your opponent accepted the challenge, you had to place your bets (which was a 1+1 offer) - with this, the game was set up so were ready to try snatch as many fries from your friend as you could. The player who lost received a post on his Facebook page inviting him for a 1+1 offer.
Bronze at Arany Penge (Golden Blade) AD festival in Hungary.