Digimon Battle Spirit 2 Guides and Walkthroughs
This is a battle game between Human Spirit Digimons. Unlike most fighting games, the victor is not decided by having the most HP, but the bluest or red "D-Spirits," which are discharged whenever the player hits an opponent. When the player has damaged the opponent enough to fill the gauge at the top, the character's Beast Spirit is activated whenever they attack, allowing them to temporarily digivolve to a higher level and attack with greater power.
Also, yellow diamonds are released during Beast Spirit attacks. Filling the diamond gauge enables the player to momentarily warp digivolve to Ancient Level and fire a powerful spell before returning to normal (this depletes the diamond gauge to zero). Once all of the Human Spirit Digimon are defeated, the player must then defeat Cherubimon. Cherubimon's name is Kerpymon in this game.
There's also a mini-game, where Digimon are used like marbles and are fired at other Digimon on the board to knock them out of the arena.