If so, then I suggest you scale it down IMMENSELY. Pick 10 digimon total. 5 of them should be enemies. Program all of their moves in. Come up with a VERY basic scenario were you get to pick one of the 5 playable digimon and then fight each of the enemy digimon. Program in your setting, your menus, write the 'story' scenes, publish. If all of that doesn't burn you out, THEN start asking about evolution mechanics.