Crystalline Caves

Crystalline Caves is the seventh world the player will encounter during a run. (Unless the player is doing World 7 Darkness) Pyro Droid 3.0 and Cryo Droid 3.0 start appearing in this world. Many people like to skip this world by killing the World 6 Shopkeeper.

Environment
The caves have a dark blue floor and dark blue walls. The world takes place at night time, restricting vision unless the Lantern or the Melee is used. Crystalline Caves' environmental hazard is lava. This world features crystals.

Forcefield Crystals
Grants enemy droids a forcefield if they were naturally spawned in one. They cannot be hurt until the crystals are destroyed or the forcefield is removed via some utilities.

Trivia

 * If a droid is linked to two blue crystals it will usually be suspended in midair until one is disabled.
 * Crystalline Caves is the first night map encountered on a normal run, not counting The Darkness.
 * This, The Darkness, Mechtropolis and technically Null are the only worlds to naturally occur at night.
 * Violent Volcano and Crystalline Caves is the only world with an alliteration in their names.
 * Coincidentally, both worlds feature lava.