How to create a new wonder and city improvement?

[elmenhorster]

Ok to create a unit is very easy, but is it possible to create a new improvement or even a new wonder? there are some free spots in 'icon.gif' for pictures...
any link to an explanation appreciated.

 

[Agent327]

Easiest is to edit an existing Wonder/improvement, but to make a completely new one I suggest using an existing one as a model (for references on how to go about it). All you need to do is make full use of the Editor (and maybe add appropriate text in Rules and Pedia.txt. Rules.txt will be updated if you edit a Wonder/improvement though.)

 

[Catfish]

No, you can't add more improvements and wonders, you can only edit some aspects of the existing ones; namely, icon graphics, improvement graphics (Test of Time), name, cost, maintenance, and prerequisite and expiry techs. Unique effects are hard-coded to each slot. Don't use the in-game editors, they're buggy. Use a text editor, such as Notepad, to edit rules.txt.

This really belongs in the Scenario Creation subforum.