Banished

Banished is a modpack that is centered around magic, machines, and living underground. It is set entirely in an underground world, using the Caveworld mod.

As hopeless it may seem, survival is possible. Creatures must be killed for power (Dark power), and that power is used to unlock spells that are used to grow plants, break blocks, and deal damage. Initially, questing is required for survival, and used for less work later on.