The map's download is a link to an online folder containing a myriad of information about
MyHouse. Both a standalone WAD and PK3 file are available. Despite mass adoption of the name "MyHouse.WAD", only the PK3 file contains the vast majority of the map. Alongside the file itself, there are screenshots of the map, photos of the supposed actual house, sketches of various elements of
MyHouse, and a journal. The map starts in the front yard of a suburban house, surrounded by a wooden fence with a boundless plane of grass beyond it. Inside the house are a collection of standard
Doom enemies. The house begins to distort as the player explores it; at first via subtle engine tricks difficult for inexperienced players to notice, and eventually by the introduction of doors into impossible spaces which grow in size as the map progresses. At first these are simple new rooms in the house, before evolving into new iterations of the house entirely, as well as distinct, seemingly unrelated spaces. These include a "Brutalist House" concrete apartment; a "Daycare" containing a
boss fight with a mural of
Shrek; a vast, featureless "Labyrinth" extremely similar to the one depicted in
The Navidson Record in
House of Leaves; and an "Airport" with a cryptic bathroom area and a plane ride. A looping staircase connects several of these locations through one-way doors. At a certain point the player can interact with a breaker that sends them to a "Burnt House" variation; this locks the player out of several of the other areas as well as two endings. Areas often retain some of the house's architectural features and/or layout. The layouts of the upper floor, basement, and bedroom recur in several sections of
MyHouse. Further, more secretive areas can require greater effort to access. Eventually the player can discover a large, looping forest road with a
Shell gas station, where a car plays "
Subways of Your Mind" on loop. The mirrored house provides access to "sllahrednU", a flipped version of
Doom IIs second level, as well as to a mirrored version of the aforementioned "Gas Station". Dying and leaving the game idle afterwards takes the player to a circular "Hospital" area once per playthrough. Furthermore, if the player attempts to traverse
MyHouse using
noclip mode, going outside of the playable area of the map will teleport the player to an adaptation of
The Backrooms. These areas, beyond just the Backrooms, are commonly modeled after well-known
liminal spaces. For example, the Bathhouse resembles one kind known as "poolrooms". The player's apparent goal is to retrieve a simple
Doom key gating an exit in the driveway. However, in the process the exterior doors disappear, preventing the player from leaving. The keys the player picks up eventually become custom items with custom textures and descriptions, and "unlock" new areas by triggering subtle environment changes on pickup. Sixteen of these items, known as "artifacts", are required to obtain one ending. Areas reference and draw connections to the sketches and journal that accompany the map's download. In one instance, the sketch drawing of many dog heads resembling
Cerberus is found in the Brutalist House. Inside this area are two entities: a domesticated dog, and a
hellhound, separated by different scales of the area. The two dogs are invariably linked together; if either dog is killed, the other also dies.
Endings The map contains five endings, each possible depending on either how many artifacts are collected or what areas are visited. •
Ending 0 (Blue Key Ending) is achieved shortly after beginning the map, by retrieving the blue key and opening the gate. It is technically the easiest ending, as it does not require any artifacts and needs only one key item to use. However, it is also very easy to be inadvertently and invisibly locked out of this ending by exploring the house. Going through the subsequent
Doom II level, Underhalls, will send the player back to the My House level. •
Ending 1 (Abandoned House Ending) is achieved by leaving the airport with fewer than fourteen artifacts. Exiting the house will cause it to disappear instantly, and a for-sale sign to appear in its place. The sign reads "Navidson Realty", a
House of Leaves reference. This ending also leads to Underhalls, similar to ending zero. •
Ending 2 (Fake Beach Ending) is achieved by going through a secret door in the mirrored version of the Gas Station. It features a fake beach placed on a movie set; the foliage and bushes are made of cardboard, and the beach view is a projected image on a sheet. The game ends on a black screen when the
clapperboard at the rear of the area is used. •
Ending 3 (True Ending) is achieved by collecting all sixteen artifacts and going through the secret door in the non-mirrored Gas Station. It is the opposite of ending two, as it is a real beach. Because of this, it is also referred to as the "real beach" ending. This is considered to be the "good" ending, as it is the only
Doom secret defined in the map's data. If neither dog in the Brutalist House was killed, the small dog is present, resting on the sand. •
Ending 4 (Burnt House Ending) is achieved by activating the Burnt House after having obtained sixteen artifacts. Attempting to subsequently enter the Gas Station will instead show a gravestone with a QR code showing Steve Nelson's obituary. •
Ending 5 (Sitcom Ending) was added in an update in April 2025 that made
MyHouse compatible with newer versions of GZDoom. By turning a hidden TV in the brutalist house off and on again, the player can escape the fake beach from ending two, navigating areas filled with television static that play studio audience sound effects. The mirror back to the normal house no longer works, and the player can instead access a mirrored version of the gravestone area from ending four. They are then led to a mirrored version of the empty field from ending one, at which point their only option is to enter "Sllahrednu." == Literary themes ==