The game was first shown at an EA press event on July 13, 2006. Designer Mike Olsen explained the 360 version "is 100% of the game on the Xbox, plus some." Graphically, the game features dynamic weather and diurnal cycles, and an enhanced particle system. All of the rackets feature new textures and geographical layouts, so they no longer all look the same, and each of the rival family compounds is completely different, with bomb locations different from compound to compound. The game also features new lighting and particle effects. In terms of gameplay, the game adds a favor system whereby rather than intimidating shop owners, the player can carry out favors for them. The player can also carry out favors for family members, in much the same way as they can carry out hits. A major addition to the game is the ability for the player to hire Corleone soldiers to join Aldo in combat. This can involve individually hiring a single family member, or hiring a crew of four men who accompany the player everywhere until they are dismissed or killed. Individual crew members cost different amounts, but the more expensive they are, the better they fight. A full crew can only be hired periodically; when a meter on the HUD is full. The game also features new story missions, such as rescuing Tom Hagen from Sollozzo, bombing Sollozzo's drug factories, and assassinating Moe Greene. The aiming system has also been tweaked, and the melee combat system has had additional combat moves added. Twenty-six new execution styles have also been added to the twenty-two existing ones.