Mass Effect: The 5 Weirdest Planets

Mass Effect has hundreds of planets to discover in Shepard, scattered throughout the Milky Way. Here are the most mysterious and unique of them.

the Mass Effect trilogy has seen a resurgence in popularity with the recent release of Mass Effect Legendary Edition, and once again new and old fans explore the stars aboard the SSV Normandy. The trilogy has hundreds of planets to find, from familiar Earth to the lost world of Ilos. Some Commander Shepard can land and explore, while others can only hover, but all come with an information profile.

Considering the sheer volume of planets in games, it’s understandable that most gamers don’t read all of them. Sometimes, however, the profiles reveal a fascinating glimpse of Mass Effect‘s vast universe and are not to be missed. These five planets are by far the strangest in the galaxy.

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The planet Armeni in Mass Effect.

The planet Armeni is the most massive cemetery in the Milky Way, but its past remains unknown. Too far from the sun for life to flourish, a hover probe first registered something strange here when it detected surface protrusions that were too orderly to be natural. Further investigation revealed millions of crypts developed beneath the surface.

Armeni was once a burial place for an extinct space species known as the zeioph, likely over 100,000 years of age or older. As with the Inusannon and the Protheans, it can be assumed that the Zeioph were harvested by the Reapers in a previous cycle. If there was a reason Zeioph turned an entire planet into a mass grave, only the Reapers now know.


The statues of Inusannon on Ilos in Mass Effect.

Four thousand years ago, a supernova threw the Mu relay into an unknown space, rendering Ilos inaccessible. This legendary planet is only known from second-hand Prothean sources until Commander Shepard set foot on it during the first Mass Effect. Shepard learns that at the end of the previous galactic cycle, the Protheans hid the existence of the planet from the Reapers, with thousands of their brightest scientists sent to cryostasis here to wait for a time when the threat had passed.

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However, the plans went awry, and the cryostasis system only had enough power to sustain the life sustaining of a handful of pods. Scientists woke up to realize they didn’t have the numbers to prevent extinction, and spent the rest of their lives building the Conduit, hoping it would help future species defeat the Reapers. By the time Shepard and his team arrive on Ilos, only strange ruins and the Long Deadly Hallows remain.


Don’t be fooled by Logan’s modest name; this hydrogen-helium gas giant is the subject of one of the few galactic mysteries Shepard does not solve in the course of the trilogy. Twenty years ago Mass effect 3, an investigative team was mapping Theseus’ solar system, of which Logan is the fifth planet from the sun, when they came across some strange readings. The team detected several disturbances in the gas giant’s cloud bands, which seemed to suggest that many massive, solid objects were hidden under the clouds. However, as the survey vessel got closer, the readings disappeared one by one, never to be detected again.

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The planet Ploba in Mass Effect.

Like Logan, gas giant Ploba is a mystery. Investigative ships have proven that sunken mega-structures exist deep in the planet’s atmosphere, with patterns too orderly and regular to occur naturally. These structures have been dubbed the “Deep Anomalies” of Ploba by the galactic community. Several attempts have been made to solve the mystery of the Deep Anomalies, but none have succeeded.

Some believe Ploba is a planet-sized supercomputer, while others believe that an extinct space species used the planet as a dumping ground for its weapons of war. The most recent attempt to reach the Deep Anomalies turned into a tragic disaster when the crew were crushed in the lower atmosphere of Ploba. The similarities between the mysteries of Logan and Ploba may suggest a deeper connection between them. Are hidden civilizations hiding under the clouds of gas giants?

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2181 Despoina

leviathan mass effect 3

Although involves massive spoilers for Mass effect 3, 2181 Despoina is too bizarre not to mention. For all intents and purposes, an unexplored planet, Despoina is covered by the ocean – and the wreckage of spaceships that have come too close. A mysterious energy signal emitted by the planet ensures that any ships that attempt to explore it are doomed to crash.

The reason is that Despoina is the hidden sanctuary of an ancient and powerful species known as the Leviathans. Centuries ago, they created the Reapers to preserve organic life, but their creations went rogue and ended up dominating the galaxy. Shepard recruited the surviving Leviathans in the War against the Reapers, but they are by no means friendly with the species that inherited the Milky Way. Now the Leviathans are lurking in the dark depths of the ocean with their own ominous patterns.

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