Rollercoaster tycoon uses ini files. Not all ini coding is the same. After nodding zh for ages I thought I'd try other games but each one that uses ini files uses them differently.
Assuming RA and ZH ini coding is the same you shouldn't have to much difficulty.
1. Add the object (create a blank ini in data/ini/object and copy your replacement tank's object code there (it doesn't matter what you call the file))
2. Create a command button in commandbutton.ini
3. Add the command button in commandset.in I
4. Add any special armour and/or weapons to their respective ini files.
Originally Posted by: klingondragon