I actually really enjoyed the gameplay. Creating different groups of units that work well together and watching them all rush into battle is very fun to me. Not to mention crafting and unit recruitment. I feel there's quite a lot about the game to enjoy.
Most Digimon games are rated low but I enjoy them just the same. Digimon World 1,2 and 3 are fun, and I love the PS1 Digimon Card game.