* AlternativeCharacterInterpretation: The main character can be interpreted as a virus invading Eden's mainframe, made popular by [[Creator/{{Toonami}} SARA]]'s review of the game.
* CrowningMusicOfAwesome: Pretty much the entire game, but the notable standouts include Stage 3 (Ken Ishii's "Creation (The State of Art)") and Stage 5 (Adam Freeland's "Fear (Don's Magical Adventure Mix)", which [[{{Sampling}} samples]] its main riff from Marlena Shaw's version of "California Soul").
** DoubleSubverted with the Area 4 music ("ROCK IS SPONGE"). For most of the level, you get a cool, percussion-heavy piece. Then, out of nowhere, a random electric guitar appears in the boss. At first this seems jarring... but then you put the rest of the level out of your mind... [[CrowningMomentOfAwesome and realize that the boss music is AWESOME.]]
** Hydelic's [[https://www.youtube.com/watch?v=e4DBcmuMVbs trance mix]], created for the new Area X in ''Rez Infinite'', encompasses various genres of trance, ending with a beautiful vocal piece for the credits.
* FridgeHorror: Eden is shutting itself down because it's under so much stress from trying to handle so much information, and a virus infected her. You're tasked with...forcing it back into duty.
** However, she does ask you to save her right before the final boss and thanks you in the white butterfly ending's post-credits message.
* MemeticMutation:
** Eden doubting her existence, to the point where fans portray her as having an existential crisis over ''anything'', even stupid things like finding out there's no pizza left.
** The Trance Vibrator for the [=PS2=] port, due to many fans immediately coming up with naughty ways to use it.
* NeverLiveItDown: While the game is highly acclaimed regardless of what system it's on, the [=PS2=] port is infamous for the Trance Vibrator accessory which naturally people came up with rather...''fascinating'' uses for.
* PlayTheGameSkipTheStory: [[AttentionDeficitOohShiny Ooh, pretty lights!]]
* PolishedPort: Every port of the game has improved upon it in some way or another. The [=PS2=] version doubled the framerate, and introduces a vibrator accessory that -- jokes about using it in NSFW ways aside -- lets you immerse yourself in the music further. ''Rez HD'' bumped the resolution up to 720p and adds online leaderboards. ''Rez Infinite'' brought sharper textures, 4K rendering, and VR. Finally, the Windows version of ''Infinite'' has mouse controls [[UnderusedGameMechanic for the first time since the Dreamcast version]], along with even higher res textures.
* ThisIsYourPremiseOnDrugs: The game has been likened to ''{{TRON}}'' on ecstasy.
* UnderusedGameMechanic: The original Dreamcast version has mouse support, but it would not appear in ports until the Windows version of ''Rez Infinite''. The [=PS4=] version included close alternatives, with aiming with Move controllers or looking around in VR.
* VisualEffectsOfAwesome: The smoother remake of the original game Areas is great enough, but Area X takes VisualEffectsOfAwesome to a whole new level.
* WatchItForTheMeme: The game got more publicity from the fact the Japanese version came with a freaking vibrator.
* WhatDoYouMeanItsNotSymbolic: The AI's name is Eden. Area 5 is a tour of the evolution of life from single-celled organisms, to sea life, to the migration to land, and ultimately, either leaving Earth to colonize other planets or the [[AscendToAHigherPlaneOfExistence Ascent To A Higher Plane Of Existence]] (depending on your interpretation).
* WhatDoYouMeanItWasntMadeOnDrugs: A common reaction to seeing gameplay footage.