The game removes several major gameplay changes introduced in "Tekken 4", such as uneven stage terrain, in favor of a faster gameplay akin to the older games in the series. It is also the first game in the series to feature the ability to customize characters with accessories, clothing, and other aesthetic items purchased with in-game currency. There are up to 32 characters to choose from, including seven new fighters. The home version includes a mode known as Devil Within, a variant of Tekken Force introduced in "Tekken 3". Unlike "Tekken 5.1" which merely tried to balance the game, the update "Dark Resurrection" adds a host of new content, especially in its home version for the PSP.