Steel Artery is a train city-building simulation game set in a moving city called Steelpolis, developed by SoulAge23. It combines elements from colony simulation games and features fully autonomous citizens with their own needs and desires. Players manage the population, production chains, and resources while navigating challenges and social tensions. The game has stunning pixel artwork and offers a unique experience with each playthrough. It is available on Steam with an 89% positivity rate from initial reviews, highlighting its complexity and management challenges. The game is priced at .24 during a promotional period, with a 10% discount until May 22.