It spawned the sequel, Power Stone 2, in 2000, and a compilation called Power Stone Collection (Power Stone Portable) in 2006. The anthology is for the PSP and includes a few enhancements. The original Power Stone now included the four new characters introduced in Power Stone 2, while the sequel contained the two characters originally ommitted. Both games contained new unique items. The PSP game is available through a physical UMD and as a PlayStation Network download. An anime show based on it aired in 1999. Promotional illustration for the first two original games was handled by Bengus.
- Valgas (Secret Character)
- Kraken (Secret Character) - Kraken is a pirate from a ship in Skull Haven. He weighs 198 pounds, measures 6'11 and has a buccaneer fighting style. When in Power Change, he is known as Ghost Pirate. His name is a reference to the kraken, along with his nickname, King Octopus. In his ending, Kraken finds the Power Stone he had been seeking. He uses its power to resurrect his deceased shipmates and sets off to take over the world. In Power Stone Collection, Kraken is made available to play as in Power Stone 2.
Gameplay involves selecting a character and then proceeding to battle the other characters, one at a time, in various locales. The fighting is three dimensional and includes the ability to use special attacks as well as pick up and fight with such objects as tables, chairs, rocks and bombs. During battle, "Power Stones", resembling gems of different colors, appear in the arena. If a character collects three Power Stones, he/she transforms into a more powerful version of him/herself. The character will then be able to use one of two super special attacks. One is generally a massive long-range power attack and the other is a grab or close-range move. The powered-up mode only lasts until the power bar is fully drained, during which the special attack can be executed (which completely depletes the power bar) or launch some form of projectile (which only uses a small portion of power). Each match continues until the life bar of one of the two characters fighting is depleted.