An AWESOME game that is broken =(
Your goal in digimon games is to train your digimon into insanely powerful digimon and "save the world". You can do that by slapping some equipment on up to 6 digimon and taking them out into the field to kick some butt or by leaving them back home in a digifarm where they can train on gadgets and get experience just loafing around.
As your digimon level up they gain stats and depending on their stat levels that can digivolve into different forms. Whats great about the game is that you can also DEVOLVE your digimon and turn them back into newbie monsters. They get to keep a % of their stats though and so when you level them back up to where they were they are alot stronger. Keep doing this and eventually newbie digimon could kick the crap out of everything little lone the mega-evolutions.
Back at the farm..or should i say farmS. You can buy and install gadgets for your benched digimon to play with while your gone. When you visit your farm you can also bring up a toolbar that contains different tools depending on what gadgets you have installed. You can use these tools to improve the stats of your digimon by doing some forced training. You can only train them so much though before they get tired and there is only a % chance of it working each time. Like there is a hammer to improve their defense and a barbell to improve strength.
The really awesome part is that the top screen on your DS has a constant feed of your digifarm so when your out fighting you can watch your other digimon back at the farm interacting with the gadgets and stuff. As you move and fight outside the farm time passes and the people at the farm gain XP and consume food. You can buy multiple farm and upgrade their size, how much food they produce, and how much XP they give. Different farms are meant for different species or different purposes. Some farms produce tons of food while you will need if you have alot of highly evolved digimon and others produce alot of XP.
All this leads to raising tons of digimon and constantly leveling people up and training them which is really fun instead of boring work. The game would be awesome and a must own title if that was the end of the story. Sadly there is a problem. A big fat huge problem actually. A stat rollback bug. You will be strolling along kicking the crap out of monsters and some of your people might level up and so when you go check them out or put it off till later you will find out that your digimon who maybe had thousands of points in a stat now has all his stats reduced to single and double digits.
There is no way of preventing it or knowing when it will happen. You just have to make sure none of your people are messed up and then make a save and do that often. It only affects people in your battle party. Atleast to the best of my knowledge. I guess it could happen to your guys on the ranch if they level up while your gone which is rare since they make way less XP.
I got NO RESPONSE from those jerk offs at Namco-bandai about it. Hopefully it doesnt happen in the two sequals. Digimon World Dusk/Dawn.