Hi,
if you are talking specifically about X-PirateZ, then you need to follow the X-PirateZ installation instructions.
They are
different from just OpenXcom installation instructions.
1. download the game, link here:
https://openxcom.org/forum/index.php/topic,3626.0.html2. extract anywhere
3. copy the Steam data into the folder: "<X-pirateZ folder>/UFO" (please note copying them anywhere else will
NOT work)
4. if you're on windows, just run the game (OpenXcomExPlus29.exe)
4a. if you're on Linux, you need to install pre-requisites too (see here:
https://openxcom.org/forum/index.php/topic,4187.msg65619.html#msg65619)
sudo apt-get install libsdl1.2-dev libsdl-mixer1.2-dev libsdl-gfx1.2-dev libsdl-image1.2-dev libyaml-cpp-dev
4b. if you have the newest version 0.99, try running the executable provided in the package (OpenXcomExPlusElf), if not then you can either build your own executable (see below) or download it from my thread (see below)
Important:
X-PirateZ runs on
custom executable, it comes either bundled with the game (v0.99), or in this thread:
https://openxcom.org/forum/index.php/topic,4187.0.html or you can compile it on your own (directions in the same thread)
Regards,
Meridian