Once you have the Natural Research Facility, your village has a chance of being attacked by monsters. You will have seven days to kill the monster. Failure to kill the monster can result in one of your village upgrades being destroyed. Successfully beating the monster will give your village a special monster upgrade (but only on the first time you beat that particular monster), as well as giving two items to your villagers. One goes to the village leader, and one will be given to one of the members who contributed to the killing of the monster, with more weight being given to those who've made more attacks. Village members who already have the monster drop have a smaller chance of receiving the item a second time.
The Nine-Tailed Fox and the Demon of the Sand both only drop one item for the kage. However, these items are tradeable. This is not a bug. Do not bug report it.
Allies, permanent items, team bonuses, and summons all help during kaiju battles. The only jutsu that can be used during kaiju battles is Bring Down the House Jutsu, which can be learned from J-Diddy.
The final attack must be performed by the village leader. This is especially a problem for the Demon of the Sand or the Nine-Tailed Fox, since the village leader must be online while the monster is low enough on HP to finish it off. Stamina is not consumed when the kage deals the last blow, though the village leader must have enough stamina to attempt the attack.
Known Monsters
| Name | HP | Stat | Difficulty | Misc. |
|---|---|---|---|---|
| Alchemists | 2,300 | Nin | 10 | - |
| Bishounen | 1,900 | Tai | 9 | - |
| Cardcaptors | 2,500 | Gen | 10 | - |
| Console Elitists | 3,800 | Nin | 13 | +1 Difficulty each day |
| Crazed Mimiga | 3,100 | Nin | 9 | - |
| Demon of the Sand | 3,500 | Tai | 9 | Variable HP Regen every night, +1 Difficulty each day |
| Drift Racers | 2,500 | Gen | 9 | - |
| Evangelions | 2,600 | Tai | 9 | - |
| Fanboys | 1,800 | Nin | 10 | - |
| Forum Trolls | 4,000 | Gen | 13 | +1 Difficulty each day |
| Giant Cockroach | 1,400 | Tai | 9 | - |
| Go Players | 2,100 | Gen | 11 | - |
| J-Rock Bands | 2,200 | Nin | 9 | - |
| Mad Scientists | 20,000 | Gen | 10 | - |
| Magical Girls | 1,600 | Gen | 9 | - |
| Nine-Tailed Fox | 4,000 | Nin | 9 | 1350-1500 HP Regen every night, +1 Difficulty each day |
| Ninja Bears | 1,500 | Nin | 10 | - |
| Persocoms | 2,700 | Nin | 8 | - |
| Pokermans | 2,800 | Tai | 8 | - |
| Pro Wrestlers | 2,900 | Nin | 8 | - |
| Psycho Hikers | 4,200 | Nin | 13 | +1 Difficulty each day |
| Robot Monkeys | 1,700 | Tai | 10 | - |
| Storm Riders | 20,000 | Nin | 8 | +1 Difficulty each day |
| Super Robots | 20,000 | Tai | 10 | - |
| Super Saiyans | 2,400 | Tai | 7 | - |
| Vampires | 1,500 | Gen | 10 | - |
| Zodiac GirlyBoys | 3,600 | Tai | 13 | +1 Difficulty every 2nd day |