There are essentially two ways for possible contribution. Firstly, you are encouraged to build own machines which exhibit behavior patterns that are different from those of the existing machines. If you like you can publish your result on this website. In that case, please get in contact with me via e-mail.
Secondly, since alien is an open source project your contributions to its source code is very much appreciated. There are several aspects that could be developed or improved. For instance GUI features, client-server communication for simulations, exploiting GPU capabilities (some promising experiments have already been made), etc. If you are interested please contact me. You are of course also encouraged to send merge request on GitLab for improvements.
Moreover, suggestions, remarks, improvements, critics etc. are always welcome!