ammunition. Each world features three masks. The first one gives the player a new weapon, and the second and third masks provides an upgrade to the weapon. In addition to weaponry, each mask also offers a unique ability like higher jumping, immunity to lava, or the ability to break boulders. Runes are scattered throughout the worlds, which grant access to cheats. The multiplayer mode can only be accessed with other consoles that also have a copy of Bionicle Heroes. The multiplayer deathmatch mode pits players against each other in an arena, similar to the ones used in boss battles in the single-player mode. The arenas have multiple tiers, and masks are scattered throughout the arena. Collecting them grants temporary access to a weapon. Game Boy Advance The Game Boy Advance version of Bionicle Heroes is a run 'n' gun shoot 'em up game. The player, controlling a Toa, can move in eight directions as well as strafe. Two types of gunfire can be selected from. Pressing the A button fires a weaker, rapid-fire blast, while pressing the B button results in more concentrated attacks. The exact attack assigned to the B button is determined by which mask the player is wearing and varies from "tight, focused laser beams to slow, exploding mortar rounds". There are six different types of masks available in the game, and these masks are scattered throughout each level. The game features 19 levels, and previously cleared levels are unlocked in a free play mode where weapons can be switched between at will. Each level features collectible runes, which can be traded in for cheats and unlock able mini-games. Replaying levels is necessary to unlock everything available in the game. After completing each region, the player battles one of the six Piraka. Mobile phone The mobile phone version of Bionicle Heroes is a top-down, 2D action-adventure game. The player can find masks throughout the levels, granting them the powers of the Toa. The masks possess the powers of the four classical elements, granting the player unique abilities. Occasionally, combinations of the four elements will be needed to advance in the game. Story Background Bionicle Heroes is set on the fictional island of Voya Nui. The story of the game is not canon to the official Bionicle story. Rather than focusing on adhering to the Bionicle story, TT Games decided to "ensure that there were as many characters