A warp rift is a tear in reality where the material universe and the Warp bleed into each other. That overlap lets daemons and raw psychic energy spill into realspace, which is why the biggest rifts shape whole sectors of the setting.
What a warp rift actually is
Think of the barrier between realspace and the Warp as a wall. A warp rift is a weak point or a hole in it. Sometimes it opens on its own when the Warp churns unpredictably. Other times the Chaos Gods make one, or mortals do it on purpose through sorcery and ritual.
They don’t all look the same. Some are seething whirlpools of raw magic, some are gates of green fire, some are clouds of impenetrable shadow or boiling lakes of pus. Plenty of them drive anyone who looks too long into madness.
They also don’t all last the same amount of time. A rift can flicker for a moment, or it can stay open for days, years, or centuries.
How they form
There’s no single cause. A rift can be triggered by the Warp surging into realspace, by a daemon possessing a mortal, by a deliberate summoning ritual, or by a huge concentration of death and suffering from a major war.
Chance plays a part too. A warp drive imploding can tear the barrier open. So can the mind of an unprotected psychic creature, which is the nastiest route because it turns the victim into the doorway.
- Unpredictable Warp movement breaking into realspace
- Daemonic possession of a mortal
- Rituals of daemon summoning
- Mass suffering and death from a great war
- A warp drive implosion
- An unprotected psychic mind
Types of warp rift
Chaos Gates are rifts opened mid-battle by Chaos forces through sorcery and howled prayers. They’re big enough to move a whole Chaos host to a new spot on the battlefield.
Portals of Spite come from Chaos Space Marine Warpstrike Champions. What sets them apart is that vengeful daemons aim them at chosen prey.
Psychic Storms are invisible rifts that Aeldari psykers create by pooling their powers. Unleashed over a battlefield, they tear at the minds and souls of their enemies.
The famous rifts
The Eye of Terror was born from the birth of Slaanesh in the heart of the old Eldar Empire. The Maelstrom is another long-standing scar in the galaxy.
The Great Rift is the biggest one ever observed. It opened after the 13th Black Crusade at the end of the 41st millennium, and it’s the reason the galaxy looks so torn apart in that era.
Not every rift is a natural disaster. The Startide Nexus was made artificially by the T’au when they mass-activated their AL-38 Slipstream Modules.
| Rift | Note |
|---|---|
| Eye of Terror | Formed by the birth of Slaanesh |
| Maelstrom | Long-standing warp scar |
| Great Rift | Largest ever observed, opened after the 13th Black Crusade |
| Startide Nexus | Artificially created by the T’au |
Warp rifts vs warp portals
A warp portal is a smaller, stable version. It links one fixed point in realspace to one fixed point in the Warp, which makes it far more useful than a wild rift.
The Imperium mostly uses portals as a way for a ship without a working warp drive to still travel. Navigators have their own take on crossing a rift: they say it’s like swimming in acid, flaying a bit of your soul for every moment you’re inside.
Key facts
- A warp rift is a tear linking realspace to the Immaterium, also called a Warp Portal in some sources.
- They can form naturally, be made by the Chaos Gods, or be created by mortal rituals.
- Causes include possession, summoning rituals, mass death, warp drive implosions, and unprotected psychic minds.
- Chaos Gates, Portals of Spite, and Psychic Storms are named types of rift.
- The Great Rift is the largest ever observed, opening after the 13th Black Crusade.
- The Startide Nexus is a rare example of an artificially created rift, made by the T’au.
FAQ
What is a warp rift in Warhammer 40k?
It’s a tear in reality that connects the material universe to the Warp. Daemons and psychic energy can pour through it into realspace.
What’s the difference between a warp rift and a warp portal?
A portal is a small, stable rift linking one fixed point in realspace to one fixed point in the Warp. A rift is usually larger and far less predictable.
What is the largest warp rift?
The Great Rift, which opened after the 13th Black Crusade at the end of the 41st millennium. It’s the biggest one ever observed.