You can read more about Immune Defense here:
Krebs, E., Jaschek, C., von Thienen, J.P.A., Borchart, K.-P., Meinel, C., & Kolodny, O. (2020, August). Designing a video game to measure creativity. In 2020 IEEE Conference on Games (CoG) (pp. 407-414). IEEE.
Immune Defense has also received an independent review here:
Rafner, J. (2021, June). Creativity assessment games and crowdsourcing. In Creativity and Cognition (pp. 1-5).