Chronics of Riddick: Assault on Dark Athena includes two single-player campaigns. One is a graphically enhanced version of The Chronicles of Riddick: Escape from Butcher Bay and the other, called Assault on Dark Athena , continues the story almost directly after the end of Escape from Butcher Bay with Richard B. Riddick and Johns in hibernation on board a ship deep in space. A group of renegade mercenaries finds them and brings them on board of their giant ship called the Dark Athena where they transform people into mindless drones. Of course Johns is a too valuable target to transform so they plan to collect the bounty that is on his head after he freed Riddick from the prison. Riddick on the other hand - well he managed to evade capture and is now really pissed.
As in the first campaign, the player once again assumes the role of Riddick, controlling him a standard first-person shooter fashion through the corridors of the ship. But Riddick isn't one who runs guns blazing through the enemies. Instead, he uses stealth to sneak up on enemies and perform an instant melee kill with whatever weapon he has currently equipped. This not only applies to his melee weapons but also to bigger stuff he'll find on his journey like assault rifles and mini-guns. If he hasn't a gun available, he can pick up a dead drone and use hers. At one point in the single-player campaign, he'll even take over the control of a full-blown mech to wreak havoc on the ship as he did back in Escape from Butcher Bay. If an enemy manages to hit the player, Riddick can use NanoMED health units to replenish his health.
Completely new to the game is the multiplayer mode allowing up to 12 players compete against each other in several game modes including Deathmatch, Team Deathmatch, Capture the Flag, Arena, Butcher Bay Riot and Pitch Black. The first three are self-explanatory, while Arena puts up to four players in small areas in either one-on-one or two-on-two fights while everyone else is spectating and waiting for their turn. Butch Bay Riot on the other hand puts three teams against each other with each team buying their weapons, ammo, and armor before each round. With the goal of bringing the power node located in the middle of the map to the enemy base, the guards, prisoners, and mercenaries don't really fight each other at once. Instead, each group has one specific enemy.