Settlers 2

* During the game, type THUNDER.
This enables you to alter the speed using the keys
[Alt]+[1]..[6], or view the map using [Alt]+[F7].

Is also allows you to see inside an opponents building.

* Start a free game with exploration off.
During that game, load the real game you were playing.

* Use the patch. It allows you to access all the missions. (Information from Cheat Machine)