other means such as codes or game completion). These cards have a variety of effects for the player, and most can double as a movement card (represented in the form of blocks, referenced as BLKS in-game). Activation conditions include USE (where they can be used immediately if all conditions are met), EQUIP (where cards take up an equipment slot), or MOVE (allowing the player to move). Most cards can move the player three BLKS, but some cards allow more (or less), and a number of cards are dedicated movement cards, most of which are based on soldiers from the previous Metal Gear games. COST is also an important factor, as it affects turn order and is represented in the form of a small counter. It can be summarized as the time taken for the player to perform an action, so if the player has a cost of 0 and an enemy has the cost of 1, the player will go first, regardless of the number of turns the player has had (unless a condition or card effect states otherwise). If the player (or enemy) builds their cost up to the amount that another character already has, that puts that card behind the character with the equal cost in the turn order. COST build up varies by card and is indicated in the upper-right corner of the card. There are 565 cards, more than twice the number of the original game, including upgradeable cards. Cards vary drastically: some allow the player to attack (Weapon Cards), some provide support such as the ability to dodge an attack (Support Cards), giving the player the ability to perform an action such as the "hold-up" move that incapacitates enemies when the player threatens them from behind or to choke an enemy unconscious (Action Cards), to use items like rations or body armor (Item Cards), or special character cards with varying effects based on the characters they represent (either all from Metal Gear games or other Konami games) such as the Sniper Wolf card with gives the player 40% more accuracy on equipped weapon for one use (Character Cards). Some cards reduce cost or give an extra turns or action points (each card takes up one action point). Solid Eye Acid 2 ships with a viewing device called the Solid Eye. It is a folding cardboard box that slides over the PSP, separating the image with