For online gaming, tells Kotaku, Forza 3 features an incredibly elaborate race rules editor.
While the game will ship with a dozen or so pre-created race modes, everything about them, from the number of laps to start delays and what sort of assists a player can be using, can be changed.
"We have a whole bunch of options that just cascade," Krauskopf said. "There are pages and pages of options they can set to make the race exactly how you want it to be."
Krauskopf likens it to the ability first-person shooter fans have to manipulate the online game rules for Halo 3, but with much more control.
For example, most racing games allow players to choose a track, the car classes and the number of laps. In Forza 3, a gamer can take that basic race and choose to change the rules of how a winner is determined.
Krauskopf explains:
*First they could section everyone into two teams, one team will win.
*They could then decide that a specific person from each team must cross the finish line to determine who wins (we'll call this person the "mouse"), the rest of the players are just there to provide interference to the other team, or protection for their own team (we'll call them "cats").
*Then they could create still deeper challenges by limiting teams to specific car classes, tunings, assists, or upgrades.
*If they want to make things more interesting they can stagger the roll-off times from the start line giving some a head start.
*If the players want to be super specific about their race, they can limit the mice to D-class, front wheel drive European hatchbacks and the cats to all wheel drive turbocharged V10s.
"This results in players running in packs on a track, trying to protect their team's "mouse" and see it safely across the finish line first while trying keep the other team's mouse away from the finish line," Krauskopf said. "A very different type of race!"
The game's online modes have more than 100 rule types to tweak giving players an almost limitless ability to customize the way they want to play, he said.