Crimson Heart

This is a ground pet, not a floating one. It hops and rolls along behind you at speed, trailing blood, and it only phases through terrain when it has fallen too far back to keep up. That makes its light dependable when you are running a flat tunnel and unreliable the moment you climb a shaft or fight in open air, because it is stuck following the floor.

The Corruption version of the same drop can be steered with the movement keys, so you can push light into a dark room before you walk into it. This one cannot. Given a choice, the orb is the better tool and this is the better look.

• It touches the ground, so it will trip teal pressure plates you walk past. Worth knowing if you have wired anything near your base.
• Switching off blood and gore replaces the blood stream with a puff of white particles that looks like something deflating.