So, I have been thinking that I should add a new type of King of the Hill game play mode on C&C3 Tiberium Secrets mod. Prepare for an explosion that will rock the game into oblivion, thus I bring "King of the ICBM." This will introduce a capturable ICBM silo on a multi-player map. Once a player captures the silo it will activate a countdown timer of 15 minutes before a over sized nuclear missile is launched on it's foe. The opponent will either have to capture the silo or destroy it, hence, destroying the heavily armored silo will cause the mini game to end without nuclear fallout. This will be coming soon...
King of the ICBM
You can add new modes to C&C3? o_o
Awesome.
It is kinda like a mini game mode that I'm going to add on maps. I'm not sure if you can actually add game modes to the entire game, though that would be awesome if you could. :)
You can make mod maps. Granatball (it's a mod containing mod maps), Battlefield, Combat, Terrace (TS) and Lights Out are such examples. All are done by Thundermods and can be downloaded at their website:
Thundermods.net
I think I also remember that custom maps on C&C 3 can be coded. (At least I know for Generals you can).