yes
No
yes
On Mafia Wars there aren't supposed to be any cheat codes anymore.
Halo 3 has no cheat codes, but some people have modded maps.
nope
No there isn't any cheat codes for these games anymore.
There are no cheat codes for Halo, only mods.
There aren't any cheat codes for Mafia Wars anymore.
You can't because there isn't an invincibility cheat for halo 3. a matter of the fact, there isn't any cheat codes for halo 3 that i know of. maybe a few
If there are any, www.gamefaqs.com will have them.
sadly,no bungie(creator of halo) did not want to put cheat codes in any of the halos because let me give you an exapmle. unlimited ammo in matchmaking. unfair isn't it. we all wish they made cheat codes.
No there are currently no cheats for tribal wars servers.