Gifts
- The description of Doodle contains a reference to Bob Ross's "there are no mistakes, just happy accidents" catchphrase.
- Several gifts are named after Kirby planets.
- The gift Revita Heart is named for Revita.
- In the memory of Big Mushroom, the narrator mentions that taking a bite of it makes her feel twice as tall. This is a reference to the mushrooms in Super Mario Bros. that make Mario grow twice as tall. While Big Mushroom's effect doesn't actually make you grow bigger (which would be a downside in a Bullet Hell game anyway), it does make your shots bigger. There's also a Poison Mushroom item, though it seems unrelated to the similarly-named Super Mario Bros. item, and isn't an example of the Poison Mushroom trope.
Dream Names
- "Love Is a Battlefield" is a reference to a song by American singer Pat Benatar.
- "Rainbow in the Dark" shares its name with a Dio song.
- "What Plants Crave!" is a reference to the promotion of Brawndo in Idiocracy.
- "Infinite Dreams" is also an Iron Maiden song, and Voladrome has a dream named "Iron Maiden".
- "Love Sells, But Who's Buying?" is a play on the Megadeth song "Peace Sells... But Who's Buying?", and Chemory's "Poison Was the Cure" references the track of the same name.
- Sandrome's "Enter Sandrome" is a reference to Metallica's "Enter Sandman", Tox Polyps's "Creeping Death" and Frozen Veyeral's "Trapped Under Ice" reference the tracks of the same name, and Astrayo's "Ride The Lightning" is a reference to the album of the same name. Additionally, Calorie's "Give Me Fuel, Give Me Fire" is taken from the lyrics of "Fuel".
- The snow-themed Snowball's "Don't Let It Go" is a reference to "Let It Go" from Frozen (2013).
- Chemory's "Down with the Sickness" is also a Disturbed song.
- Ombroah's "Black Rain" shares its name with the film Black Rain.
- Lavalin's "This is The Art of Ruin" references the lyrics of Lamb of God's "Ruin".
- Sentinel 4X's "Quadraxis Annihilated" is likely a reference to Metroid Prime 2: Echoes's Quadraxis, another quadrupedal mechanoid.
- Alter Syncron's "One Step Closer" is also the title of a Linkin Park song, and Alter Glacia's "Become So Numb" is part of the lyrics of "Numb".
- Default's "I'm Made of Metal, My Circuits Gleam" references the lyrics of Judas Priest's "Electric Eye".
- Forma's "Black Hole Sun" references the Soundgarden song.
- Stella's "Here Comes the Sun" shares its name with a track by The Beatles.
- Emerald's "Emerald Splash!" and Topaz's "Golden Experience" are JoJo's Bizarre Adventure references.
- Ruby's "It's Also a Gun" is a reference to a quote from Ruby of RWBY.
- Pearl's "Strong in the Real Way", Sapphire's "Here Comes a Thought" and Amethyst's "No Matter What" are named after Steven Universe songs. Moreover, all of these monsters share their names with Steven Universe gems, Pearl sang "Strong in the Real Way", Amethyst was a singer for "No Matter What" and a Sapphire fusion sang on "Here Comes a Thought". Additionally, Chroma's "Attack the Light" shares its name with a Steven Universe game.
- Citrine's "Citrus Lump" is named for a Pikmin treasure.
- Nova's "Taste The Rainbow" is named for the Skittles slogan.
Other
- The game consistently uses the order of Shambles (green) - Guardians (red) - Eyeric Glyphs (yellow) - Zaramechs (blue) - Glass Flora (orange) - Veyerals (purple). Why? To match the note colours in Guitar Hero (with purple tacked on at the end).
