Enter "JEHUTY" as a password to get a card featuring Jehuty from Zone Of The Enders. This card will destroy all equipment and equipment level-ups in the current room.
Enter "KAREN" as a password to get a card featuring Karen from Policenauts.
Enter "MIKA" as a password to get a card featuring Mika from Snatcher.
Gives you card 199
Gives you card 200
Gives you card 201
Gives you Card 202
Gives you Card 203
Enter "VIPER" as a password to get a card featuring Black Arts Viper from Metal Gear Solid on the Game Boy Color.
Enter "XMEIGHT" as a password to get a weapon card with 50 attack, 60 hit, 5.56mm bullets, 6 shots, 70 reaction, move 6 spaces, knockback, and burn.
Bikini model clip
Enter "ELYTS", "SABRAGE", "NOMEL", or "MAEB" as a password to see clips featuring Japanese bikini models. Note: These will cause Snake to get a nosebleed, but has no effect on Teliko.
Multiplayer with Wi-fi
Once you complete Stage 6, the Residential Area, Teliko has joined the mission. If you go to the options during the intermission menu, Link Battle is now available. You can link two PSPs through AD-hoc, and go head to head while controlling Snake and Teliko.