商人サーガ「魔王城で金儲け！」is an adventure game developed by CyberX Games. In this fantasy world, the princess loved by the king has been kidnapped by the demon king. The king, desperate for help, turns to a merchant father who is motivated by the reward. The merchant father embarks on a daring adventure to conquer the demon castle.

The game features the merchant father's quest for riches as he takes on the mission to defeat the demon king. Players can hire companions and do business at the demon castle to prosper and support their friends. Various jobs are available for recruitment at a temporary staffing agency. To overcome strong enemies, players can acquire weapons and items to enhance their friends' abilities. The king is also willing to assist in any way possible for the sake of the princess.

Embark on an exciting adventure as a money-driven merchant in 商人サーガ「魔王城で金儲け！」 and conquer the demon castle!