Set in medieval times, Undead Knights is a story about a puppet king, his mysterious queen, and a deadly betrayal. The king ordered his men to kill the entire family of his loyal knight, Romulus, after Romulus questioned the loyalty of the queen.
You play as one of three characters; the Knight Romulus, his younger brother Remus, or Sylvia, Remus' bride and daughter to the king. As the three lay dying, they make a pact with an evil force, and return infused with unholy power, bent on revenge.
As you progress through the game, you must convert enemies into zombie slaves. These zombies can be ordered to attack or pin down your opponents, break down barriers/objects, and even form unliving bridges to circumvent obstacles. Zombie minions can also be used as inhuman shields, objects to be thrown, and more.
The game features a metal soundtrack, third person viewpoint, and gameplay similar to that of Tecmo's 3D Ninja Gaiden games. You'll collect "Dark Energy" along the way, which can be spent on character upgrades. The game also includes a single player story mode, as well as ad-hoc multiplayer support for up to four players.
Undead Knights was released in 2009 for the PlayStation Portable (PSP) console and is classified as an action RPG.