Killzone 3 will be hitting shelves February 22nd, and is expected to usher in stereoscopic gaming in a big way.  The developers have spent countless hours tweaking various game aspects to make the stereoscopic experiences one of the best available, and found themselves answering several odd questions about elements typically forgotten, like crosshairs.

When playing a shooting game, cross hairs often appear on the screen to help the player aim and shoot enemies. But these cross hairs aren’t supposed to be an actual physical object a game character could touch or run into. Ter Heide said the “Killzone 3” team has had to spend time figuring out at what depth to place those cross hairs within the 3-D world and how to make them move across the varying levels of the world’s ever-changing environment in a way that isn’t jarring to the player.

The same goes for other elements of the “heads up display” – a set of menus and items that gamers often see on the screen that give them important bits of information about things like ammunition levels, directions and the state of the character’s health. Ter Heide said they’ve had to figure out where these various informational devices should “live” in the game.

via Technolog – ‘Killzone 3’ makers run into unexpected challenges going 3-D.