Details of co-op are unconfirmed at this point, it appears there's a separate mode where players can play custom quests.
Cladun is an 8-bit retro style RPG that allows players to customize their experience. You can choose your arch nemesis, draw your main character and create a "Circle of Magic"
This page contains co-op info for ClaDun: This is an RPG! on the PSP. All information about ClaDun: This is an RPG! was correct at the time of posting. Information is subject to change. If you see any errors please email us.