The new purchase system features four user-definable "Buy Packages." Each Package represents a complete equipment load out, allowing players to define everything from their primary weapon to how much ammo to buy to fallback options if money is tight. With the CS:CZ Mission Creation Kit, MOD authors can create their own Tour of Duty Mission Packs with custom challenges, bot personalities, bot skins, and more. These MOD Mission Packs can then be distributed to players as Zip files. When installed, the new mission pack will automatically appear within CZ's mission menu..