Press ENTER during game play, then activate the following cheats by entering the corresponding codes:

CHEAT FUNCTION - CHEAT CODE
Toggle game pause - cheat pause <0 or 1>
Set all players to human and full map - cheat sandbox
Set AI state - cheat ai
Machine guns around every human capital - cheat safe
Set difficulty - cheat diff <0-5>
Display achievements - cheat achieve
Force alliance with nation - cheat ally
Force peace with nation - cheat peace
Force war with nation - cheat war
Force encounter with nation - cheat meet
Force encounter-off with nation - cheat unmeet
Turn off computer control - cheat human
Turn on computer control - cheat computer
Defeat nation - cheat defeat
Victory for nation - cheat victory
Show or change technology - cheat tech
Show or change resource - cheat resource <+ or ->
Add indicated number of all resources - cheat resource all+
Show or change age for nation - cheat age
Show or change military level for nation - cheat military
Show or change civic level for nation - cheat civic
Show or change commerce level for nation - cheat commerce
Show or change science level for nation - cheat science
Show or change all library tech levels for nation - cheat library
Toggle bounding box mode - cheat bbox <0 or 1>
Show combat ranges - cheat ranges <0 or 1>
Kill object or all selected - cheat die
Adjust damage to object or all selected - cheat damage <+ or ->
Insert unit or building at pointer location - cheat insert
Insert unit or building at pointer location - cheat add
Finishes selected building(s) or next item in queue - cheat finish
Spawn Wild Bird at pointer location - cheat bird
Spawn Nuke at pointer location - cheat nuke
Spawn Cruise missile at pointer location - cheat add cruise
Packs the currently selected unit(s), if they are packing units - cheat pack
Deploys the currently selected unit(s), if they are deploying units - cheat deploy
Toggle full map - cheat reveal <0 or 1>
Change game explore configuration - cheat explore

Use one of the following entries with the "cheat add" code.

UNIT OR BUILDING - CODE
Continental Rifle Marines - continental
Battleship - battle

When first beginning a game, enable the cheat reveal code to show all of the map. Move the pointer to an enemy base and enable the cheat nuke code. This will drop a bomb over the selected area, and the enemy should ask for an alliance. Note: Make sure that you are in "Diplomacy" mode when trying this.

To make more room for military units, kill all of your scholars after everything has been researched. You have no use for knowledge now.

If an enemy is building a Wonder that you do not want them to have and you do not need it, enable the "cheat add" code on the edge of the map. Note: The pointer must be out of bounds. You will get that Wonder out of the level. You cannot see it or select it; you can only see it on the mini map.