

They are a duo of giant mechanical eyeballs, which tag team their target with fast firing lasers and hot green flame. During their first stage, they wear a facade, masquerading as Eyes of Cthulhu. Once their health is brought down, they shed their disguises and reveal their metal reality. This was an absolutely exhausting boss to make, and I'm partly to blame for this. I was very resistant to the idea of simply reskinning the Eye of Cthulhu to be the Twins.

I took a different approach, completely redesigning everything from their internals, their weapons, and their power supply. It took the better part of a month to hammer out their design and get them into working shape. The Twins are mechanical eyeballs, that much is true. However, they are unlike the other mechanical bosses, as they parade around as the Eye of Cthulhu when they attack, before dropping the act after sustaining too much damage. I originally saw this as a sort of "Terminator" motif, in that the player was chipping away at their disguise, and their metal core was being exposed by the player's attacks. I also thought about how they might relate to the aliens and the Moon Lord, in that they were made by the Moon Lord's servants in the image of his devious eyes. Or perhaps they were made by some third faction? Who knows.Īfter brainstorming a bit, I threw out my designs, and went into it with the mindset that the Twins are space fighter-craft, like something out of Star Wars or Star Trek, with things like a functional engine and a living pilot. They project and image of the Eye of Cthulhu as a scare tactic, and they have drop the disguise when they can sustain it no longer. The "souls" dropped by the Twins after their defeat are an alien engine fuel, that Terrarian's simply mistake for "souls". The fans in front lend to the idea that the twins are eyeballs, and also stabilize the ship when flying in an atmosphere(air feeds, science bullcrap, etc).

The cockpit features an adjustable seat, so that different types of pilots could fit into the chair. The Twins are two separate flying entities, Retinazer and Spazmatism. It's the little bits of detail in this model that really make me marvel at how it turned out. The Twins are a mechanical boss players can face in Hardmode of Terraria. Though not quite obvious, Spazmatism features a updated look. I was going to make Spazmatism a teethy mechanical eyeball, but when compared to Retinazer, it simply didn't make much sense.
