Board Games (Unlimited) by Zillions of Games

Chaos is a strategy game similar to chess. Each side has a 27 piece army consisting of 15 different character types. In the Advanced Game there are eight new pieces that other pieces can promote to (in the variants the players begin with these pieces).

Foot Soldier: Moves just like a pawn in chess. Promotes to a captain in the back row. May capture forward while on a yellow power square and while a captain occupies a yellow power square.
Captain: Moves one or two spaces orthogonally. Captures one or two spaces forward or one space diagonally forward. Promotes to an angel, serpent, elf or mage on the back row power square. If another piece is on the back row power square, then a captain may promote the piece by moving into it. A mage promotes to an archmage, a serpent promotes to a dragon, an angel promotes to an archangel, an elf promotes to an elven archer, a captain promotes to a berserker, golem, sorceress or spirit, an elven archer promotes to an elven mage, an archangel promotes to a valkyrie, an archmage promotes to a master archmage, a berserker promotes to a death knight, a dragon promotes to a dragon queen, a spirit promotes to an entity, a sorceress promotes to a temporal mistress and a golem promotes to a colossus. While a captain occupies a yellow power square all friendly foot soldiers may capture forward.
Elf: Moves like a rook in chess. May fire like an elven archer while occupying a yellow power square.
Angel: Moves like a knight in chess. when landing on a yellow power square may sacrifice itself for a piece which has been captured but not destroyed.
Serpent: Moves like a bishop in chess. May move like a dragon while occupying a yellow power square.
Mage: Moves like a queen in chess, but may not capture on a void (red) square. May teleport to any yellow power square upon reaching a yellow power square or while on a yellow power square.
Elven Archer: Moves or fires like a rook. May fire immediately when landing on a yellow power square. Destroys pieces when firing from a yellow power square.
Archangel: Moves like a knight or may double this movement. When landing on a yellow power square it may sacrifice itself for a piece which has been captured but not destroyed.
Archmage: Moves like a rook followed by a bishop, or a bishop followed by a rook. May not capture on a void (red) square. May teleport to any yellow power square upon reaching a yellow power square or while on a yellow power square.
Berserker: Moves one square orthogonally or like a bishop. Destroys any number of pieces diagonally (friendly or enemy). When landing on a yellow power square destroys all pieces (friendly or enemy) in adjacent squares.
Emperor: Moves like a king in chess.
Dragon: Moves like a queen in chess. May pass over friendly pieces. While occupying a yellow power square can only move as a serpent.
Spirit: Moves three spaces freely. Moves four spaces from a yellow power square.
Sorceress: Interchanges with any friendly piece not occupying a void (red) square. While occupying a yellow power square may interchange with all enemy pieces (except an emperor) not occupying a void square.
Golem: Moves one space in any direction. Destroys all pieces in adjacent squares. Any piece landing on a golem occupying a yellow power square is destroyed.
Elven Mage: Moves or fires like a mage (thus it cannot capture on a void square). Immediately destroys the first enemy piece in every orthogonal direction when landing on a yellow power square (unless the enemy is on a void square).
Valkyrie: Moves like an archangel. Instead of capturing an enemy piece with a single knight movement may possess the enemy piece causing it to switch sides. May possess as a double knight from a power square.
Master Archmage: Moves like an archmage. May also teleport to any unoccupied non-void square.
Death Knight: Moves like a berserker. May also move orthogonally destroying all pieces in its path.
Dragon Queen: Moves like a queen in chess. May fly over friendly pieces and one enemy piece. Destroys an enemy when not passing over another enemy.
Entity: Moves four spaces freely.
Temporal Mistress: Interchanges with any piece not occupying a void square with the exception of an enemy emperor, spirit, entity, archmage or master archmage. From a yellow power square may capture any enemy except the emperor.
Colossus: Moves like a golem but destroys all pieces two squares away in any cardinal direction.