According to the trial rules John understood, a wave had to be cleared for the next one to spawn. If the Hiveminds were hiding and his friends came later, and struggled to defend themselves, who was clearing the field?
[Ding! If there is no one present to fight and kill the monsters, the den will automatically re-absorb 10% of the current wave's total count as sacrifice and unleash a higher-tier wave, jumping 10 levels for every hour of uninterrupted growth!]
'…' John was speechless for the third time in a row! He stared at the system's answer, his mind racing to process the logic being revealed to him. The implications were staggering. 'Does that mean if in any territory, no one fought these monsters, the den will keep evolving endlessly?!'
[Ding! There is nothing called endless in the apocalypse! If the monster wave count hits 100, an evolution will occur, and a new type of monster will appear!]
'…'
