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Prototype teleportation device
250 (instant death to human-sized enemies)
100 ammo points (1 primary shot = 20 points, 1 self-teleportation = 60 points)
|Rate of fire||
Medium to long
The Displacer is a prototype portable teleportation device created by the Black Mesa Science Team. It has the ability to transfer an object or life form from Earth to the borderworld Xen. It is acquired from a scientist that falls to his death in Xen, in the chapter We Are Not Alone.
It has two fire modes. The primary mode generates a large green portal that kills anything nearby. A direct hit teleports the target to an unknown destination in Xen. The secondary mode allows the player to self-teleport to a random location in Xen, but it also damages anything nearby during the sequence. It uses Uranium-235 as ammunition, which also used by the Tau Cannon and Gluon Gun.
 List of teleport destinations
Using the Displacer always sends the player in a small location set in the current map. That area always features one or two portals bringing him back where he came from, so that he can resume his journey. These areas often feature dead Black Mesa scientists (lab coat and HEV Suit versions) and supplies, and non-hostile NPCs.
- We Are Not Alone
of3a2: Set on Xen, this is the map where the Displacer is found. After witnessing Gordon Freeman teleporting to Xen, Shephard uses another portal, sending him to another Xen location featuring a Race X portal powered by a large Xen crystal from which Sprites fly and enter back to another portal located above, and a dead Survey Team member. There he witnesses a scientist teleporting high above, falling to his death on an island with a Displacer. Upon acquiring the weapon, Shephard can use it to teleport into a segment of the Training Facility, where he witnesses Vortigaunts attacking the Holographic Instructor without any effect. As Shephard is already on Xen when using the Displacer teleportation feature, it is the only teleport location not set on Xen.
- Crush Depth
of3a4: From the Biodome Complex, Shephard can teleport himself to the same Xen location seen during the Resonance Cascade in Half-Life, and where the Decay bonus chapter Xen Attacks starts. There the Bullsquids drinking in the Healing Pool are still non-hostile. The portal teleporting back to Black Mesa is located behind Shephard after teleporting, in a cave.
of3a5: Again from the Biodome Complex, it teleports to a Xen location where a scientist who came there with another Displacer is hanging from the cliff of an island. However Shephard does not teleport on solid ground, and falls to his death in the void. The end message then reads: "Status: Accidental death - Postmortem: Displacer Cannon self-teleport mishap". One of the islands features a Healing Pool.
of3a6: Again from the Biodome Complex, it teleports to a Xen location where corpses of Survey Team members are found. A portal leads back to the Biodome Complex. It will sometimes lead to a Biodome Complex area featuring another portal teleporting back to another spot of the Xen area, then teleporting back again to the Biodome Complex.
- Vicarious Reality
of4a1: Again from the Biodome Complex, it teleports to a Xen cavern where a scientist, thankful to be rescued, is found. The scientist can then teleport through the portal, but he cannot be seen after following him. There can also be found a Healing Pool, several Xen Plant Lights and Xen crystals.
of4a2: Again from the Biodome Complex, it teleports to a Xen area with three islands linked together vertically by a column, Xen crystals, Survey Team member corpses and two flocks of Boids.
of4a3: Again from the Biodome Complex, it teleports to the same Xen area as the one visited in
of3a6, only that the skybox is plain black. It is briefly seen, with no dead Survey Team members and no supplies, in the Blue Shift chapter Deliverance.
- Pit Worm's Nest
of4a4: From Waste Processing Area 3, it teleports to a large flooded Xen cavern with Xen Plant Lights, the corpse of a lab coat scientist and of a female HEV Suit scientist, possibly Gina Cross (as it uses the multiplayer model "
gina.mdl"). Despite being set on Xen, the Pit Worm can still erroneously be heard from that area.
of4a5: Again from Waste Processing Area 3, it teleports to the same Xen area as the one visited in
- Foxtrot Uniform
of5a1: From Sector G's hangar areas, it teleports to the same Xen area as the one visited in
of4a1, only that there is no scientist.
of5a2: Again from Sector G's hangar areas, it teleports to the same Xen area as the one visited in
of5a3: Again from Sector G's hangar areas, it teleports to the same Xen area as the one visited in
of5a4: From Sector G's Hydro-Electric Dam, it teleports to the same Xen area as the one visited in
of4a4, except that it now features two portals. One portal teleports back to the hangars side of the dam, the other to the Alien Research Labs side.
- "The Package"
of6a1: From the desert area located after the Hydro-Electric Dam, it teleports to the same Xen area as the one visited in
of4a1. The scientist is again there, but does not teleport when walking through the portal.
of6a2: From outside Sector E's larger Ordinance Storage Facility, it teleports to the same Xen area as the one visited in
of6a3): From Sector E's larger Ordinance Storage Facility, it teleports to the same Xen area as the one visited in
of4a4. Both portals teleport back to the same spot, which changes depending on what spot Shephard is before teleporting.
of6a4): From the underground parking lot of Sector E's larger Ordinance Storage Facility, it teleports to the same Xen area as the one visited in
- Worlds Collide
of6a4b: From under the underground parking lot of Sector E's larger Ordinance Storage Facility, it teleports to the same Xen area as the one visited in
of6a5: From the Gene Worm area of Sector E's larger Ordinance Storage Facility, it teleports to a Xen area featuring three islands, a dead Survey Team member and his Weapon Box, and a few Xen crystals.
- In the view model of the Displacer, BLACK MESA XV11382 is written on the thick black cable. This may be a reference to George Lucas' THX-1138, which is referenced many times throughout the Star Wars saga, and other works.
- To prevent the player from trying to self-teleport in Xen, the alt-fire uses 60 ammo (out of the 100 ammo reserve) and it can't be refilled in Xen.
A Displacer chart seen in the chapter Friendly Fire.
 List of appearances
- Half-Life: Opposing Force Teaser (First appearance) (Non-canonical appearance)
- Half-Life: Opposing Force