Notice: This page contains spoilers for the game INSIDE. Proceed with caution.
The Alternate Ending is a secret ending that can be achieved once all the hidden orbs have been deactivated.
Procedure[]
After playing through the game at least once and after all the orbs have been deactivated, return to the cornfield in the farmland where the second orb was located. Open the hatch on the floor and enter the bunker, then head to the closed door on the right.
Next to the door there is a three-way lever, in which each direction plays a tone. To open the door, you will need to replicate a sequence of tones played from a VHS machine found near the fifth, twelfth, or thirteenth orb.
The tone sequence corresponds to the directions (with L being left, U being up, and R being right):
L-L-L-U-U-R-L-R-R-R-U-U-U-R
Ending[]
Once the door is open, the protagonist will enter a long tunnel in a cave-like fashion. At the end of the tunnel is a ventilation shaft that leads to a room with derelict orbs, a desk, and a chair with a mind hat hooked up to several computers.
Further down the room is a gate that, if opened, will reveal a plug. Should the protagonist unplug the cable, the mind control helmet hooked up to the computers will deactivate, the lighting will shut off, and the protagonist will enter a limp state similar to that of an idle albino.
The meaning is not entirely known, although many theorize that this either represents the protagonist being freed from the player's control (breaking the fourth wall in a sense), or that the cable being unplugged has freed every albino from being mind controlled (similarly hinting that the player is controlled as well).
Trivia[]
The mind helmet found here is called the "Master Mind" in the game files.
Extracted models of the in-game farmland area. Note the unused elevator at the bottom-left and the Master Mind's location beneath the launching contraption at the bottom-right.
The Master Mind is located directly underneath the barn in the farmland which houses the launching contraption for the chicks.
The Master Mind is connected to multiple yellow cables. These appear to be the same cables that connect to the orbs and the same ones that connect to the panel with indicator lights showing which orbs have been deactivated. It isn't clear whether the cables "begin" or "end" at the Master Mind.
When the boy jumps, the yellow wires connected to the Master Mind jolt side to side.
In the game's code, there is an event set to trigger as the protagonist walks through the narrow cave leading to the Master Mind. This event seems to indicate the arrival of an elevator (for which a model can be found in the game files). However, the elevator model and the event trigger are off-screen, seemingly indicating that this was a scrapped idea.
Unplugging the cable requires two pulls. After one pull, sparks fly and the Master Mind jolts sporadically. The player can then choose to leave and play through the game normally, however there do not appear to be any changes or differences in gameplay.
Halfway unplugging the cable also causes the boy to temporarily make unusual breathing noises.
