Master Gnome

Just like this, they disappeared from the dungeon.

The small round thing that I crushed was a special thing that they gave us along with the maps that sent us in here.

Each chip like thing was actually an emergency escape button.

As long as it was crushed, it would send the team that it was associated with out of the dungeon. It was used as a way to give up on this competition, but also to save one's life.

Once it was crushed, it would mean that the team associated with it would be out of the competition.

For those that had pride, they would rather die than give up. But this thing did give a second option for those that valued their lives more.

As for why I didn't just kill them…

None of the people that participated in this competition were normal people. All of them were talented youths that were gathered from all over the country.