Sherlock initially wanted the gamers to construct basic and productive buildings. If they could discover valuable ores such as Magic Stones, then he could use the Magic Stones to buy other Dungeon Cores to upgrade his Dungeon.
With the upgrade of the Dungeon Core, he could recruit higher level servants, as Goblins were mere laborers and couldn't become warriors. Goblins were weak and had low intelligence.
But the intelligence of the otherworld's gamers was much higher than normal Goblins. In addition, they could revive infinitely. Sherlock had a bold idea.
"Bru, I have a bold idea," Sherlock said.