Lady Sia is a platform game with action-adventure elements for the Game Boy Advance made by RFX Interactive and published by TDK Mediactive. It was released in the USA on October 15, 2001 and in Europe on October 19 of the same year. Lady Sia is one of the few original games produced by RFX Interactive. The game takes place in a fantasy world where the player assumes the role of the Xena-esque warrior princess, Lady Sia. It is her task to defeat the T'soas, a race of anthropomorphs created by the evil warlock Onimen, who has declared war on the other realms. Her quest leads her through four different realms, the last one being the home continent of the T'soas themselves. A sequel was planned for the GBA in 2003 but was cancelled due to lack of interest and funding.