When you feel you could add something nice to this project by example making concept art, video's, models, run a forum for the project or anything else that helps out the game then please contact the developers on the IRC channel.

You will be mentioned on the official developers website, on several forums as well on other websites related to Project Ion.

A personal thanks to both Schlumpfsack and Kalamona for their great contributions!
Be sure to check out more about these two developers and official supporters from Project Ion.
When you want to donate money you could visit the official website for more information.
You can also visit the IRC channel from the developers and talk with Jelle.