experience system increases Terry's statistics individually as he performs specific actions. For instance, when Terry takes damage, his defense increases; when he damages an enemy, his strength increases. There are other statistics that affect Terry's relationship with the game's non-playable characters, including fame, courage, and karma. The character can attack any NPC at will. As animosity towards Terry grows, townsfolk will attack Terry on the street or run when they see him. Weaker enemies also flee when Terry advances depending on his fame. There is a costume system through which new skills can be learned. Up to eight costumes can be obtained, turning Terry into such forms as a fisherman, a chef, a thief, an "aqua shot," a car driver, a digger and a pilot. With greater use, a costume will add extra powers to its associated skills and statistics, including elemental magic and magical properties. Terry also has weapon-based skills. The weapons are divided into three different categories: punching (gloves), striking (clubs), and slashing (swords). Each skill can be upgraded by using each type of weapon throughout the game. Each enemy has its own weakness, so some of Contact's strategy involves switching to the appropriate weapon to exploit an enemy's weak point. The game also uses decals or stickers. The player can stick multiple decals to Terry, resulting in added powers. Decals can also be used to attack enemies, heal, and other functions. There are many items to collect, a large number of which are food. Terry can combine foods in the cooking system while wearing the chef costume, which Terry can consume to replenish health and negate status ailments. Food and potions also require time to digest in Terry's gut and yield bonuses which vary depending on the kind of item, in addition to the digestion time varying, so timing is a factor when using these items in battle. The game contains a number of side-quests. While none of these are necessary to complete the game, certain costumes cannot be obtained without completing a particular side-quest. The game additionally makes use of the Nintendo Wi-Fi Connection. During Contact Mode, the player can exchange friend codes with another player and make contact with one another. In the single player adventure, upon reaching the WiFisland, all friends who have been contacted through friend codes appear as non-playable characters, sharing tips and items. Up to 8 players can be stored as