FIFA series since FIFA 07, according to an interview with him in Official Xbox Magazine issue 73, which hits newsstands on May 10. FIFA 12's Impact Engine does away with canned animations and uses physics and body positioning and movement to determine action and injury.
"It's the biggest change we've made since we rebuilt the engine for next-gen consoles," McHardy said in the interview. "I mean we rebuilt the engine from scratch, so that's as big as it can get, but since then we're ripping out a big chunk of the game and it's a massive change."
"It solves a lot of problems for us this year, it gives us better accuracy, better momentum, more realistic outcomes, solving a lot of situations that we just tried not to get into before."
One of the biggest aspect of the game the Impact Engine affects is tackling. It can determine whether contact from another player merely inconveniences a player or if it causes the player to lose balance and topple over. It can determine where the ball is headed depending on your movement. Momentum is another part of the game to be considered now.
"When you think about the resilience of the player and the ability for someone to take a hit and continue dribbling, we didn't have that ability before in our game because you were either dribbling or you were stumbling. Now we have that grey area and it's something we can play with down the line, just to give you some vision of where we see these kind of things going," McHardy added.
FIFA 12 will be released later this year on PC, Xbox 360 and PlayStation 3.