Here's one way to get people to drink milk. Vancouver game design studio Ayogo has rolled out "Milk vs. Cats," a smartphone game that forces players to steady a glass of milk against a barrage of cats.

"Obviously people love cats and kitten videos and kitten images, so that was definitely one of the motivators," Jesse Spink, Ayogo's creative director, told The Huffington Post B.C. on Tuesday.

The point of the game is to get users up and moving instead of just sitting down and moving your thumbs across the screen.

When you play in "active" mode, the game activates your iPhone camera and sets a glass of milk against a real-life backdrop. You can be walking down an alley or a city street trying to balance a glass of milk when cats start flying at the glass, forcing you to tilt your phone to keep it straight.

The goal is to walk as far as you can, while a GPS triangulates where you started and finished, explained Spink.

Ayogo, a studio that encourages healthier life choices through social games, produced "Milk vs. Cats" at the urging of the Prairie Milk Marketing Partnership. It developed the game alongside Dare, a Vancouver advertising agency.

The game works on the iPhone and the iPod Touch and is available for free through the iTunes app store.

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