While surfing GAME's official website, I noticed two things of interest.
One would be GAME's Pokemon Platinum pre-order deal, which is the exact same Giratina origin forme figure that has already been given away in a few other locations. Pre-order the game before May 22nd to score one of your own.
The other would be their "PokePets Win Prizes!" contest. From now until May 13th, residents of the UK & ROI can email pictures of their pets dressed up as Pokemon or decorated with a Pokemon theme to firstname.lastname@example.org - subject line being the same as the contest title. The prize pack for the best images includes a Nintendo DSi, Pokemon Platinum, Diamond, Pearl, Ranger 2, and both Pokemon Mystery Dungeon 2 titles. Be sure to click the url above and read all the rules if you're interested - an unhappy pet will see you disqualified.