The game started development in early 2005 under the project name "YGG", with the official unveiling to the public being in October 2005 through "Famitsu" and Sting's official site. The game changed quite a bit throughout its development. In early designs, the GEN stat did not exist, characters instead being assigned LDS and INT stats, as well as a "FREEZE" status effect that did not make it into the final version. Also in these early designs, the character art was incomplete, leading the designers to resort to the recycling of "Riviera" resources during development. In the first released screenshots, it can be seen that Aggression functioned in reverse, the directional buttons coinciding more literally with the change in Aggression produced by their manipulation, rather than symbolically. The cards were initially shown to have a great deal more MOV, along with the much larger maps.