To play the game, the player moves a cube known as a Light Body along a flat plane known as the Unified Field and must collect a set number of "life force tiles" to complete the level. To collect a Life force tile, the cube must touch a tile of one color with its like-colored face. The game ends if the player should run out of time or if the light body is blocked by differently colored tiles.
The game has three modes of play: Longevity where the player must play for the longest possible time, Abundance where they must clear a set number of levels within the time limit, and Quickening, which is Abundance but with progressing difficulty.
The game's soundtrack consists only of five-second loops that are randomly arranged into full-length tunes along with subliminal messaging that can be heard clearly only through headphones which are oriented towards peace, well-being, love, and happiness.
This game has the following tropes:
- Amazing Technicolor Battlefield: The game's backgrounds range from psychedelic to not possibly made by a conscious mind!
- Bizarre Puzzle Game: The player plays as a multicolored cube and must roll around a field to collect life tiles by touching them with a face of the same color.
- Casual Video Game: Along with its casual gameplay, the soundtrack contains subliminal messages if listed to through headphones which gives the player encouraging messages.
- Critical Existence Failure: If the light body cube is unable to move anymore because of being blocked in by tiles of the wrong color, the game is over.
- Endless Game: In Longevity, the game only ends when the player cannot make any more moves and the cube gets stuck.
- Pun: The game's title is a misspelling in "endorphin" which is a hormone that can stimulate the human brain.
- Subliminal Advertising: The game's soundtrack contains what the publishers describe as "subliminal" messages of personal affirmation which are fed randomly to the player. The self-help-style messages were enough to raise concerns in the media about the game "fooling around with the unconscious."
