- topaz - blue gemstone: https://unsplash.com/photos/agsdDgRW2Ps by Jacek Dylag
- emerald gemstone with jewelers loupe and tweezers: https://unsplash.com/photos/jYVvmAi4u8c by Sabrianna
- a diamond placed in a sea of glass: https://unsplash.com/photos/ypk__5RJOBM by Bas van den Eijkhof
- unnamed pear-cut purple gemstone: https://unsplash.com/photos/7ZmtUtAArRI by Conscious Design
- diamonds on dark surface: https://www.pexels.com/photo/diamonds-on-dark-surface-5442447/ by The Glorious Studio
- recolored to form different gemstones
- unnamed red gemstone necklace and earring set: https://unsplash.com/photos/EhPih0l5bjw by Victoria Priessnitz
- unnamed pearl earing: https://www.pexels.com/photo/close-up-photo-of-a-pearl-earring-9428779/ by cottonbro
- blue emerald cut tanzanite gemstone: https://unsplash.com/photos/Talnaz9Bug0 by Sabrianna
- unnamed blue-orange iris: https://unsplash.com/photos/B0zAPSrEcFw by Victor Freitas
- unnamed brown iris: https://unsplash.com/photos/JC61bV2B4zA by Dalea Jerielle
- blue eye: https://unsplash.com/photos/Z-5i0RVukdU by Egor Vikhrev
- unnamed brown iris: https://www.pexels.com/photo/close-up-photo-of-right-person-eye-1435823/ by Engin Akyurt
- unnamed redish iris: https://www.pexels.com/photo/close-up-photo-of-an-eye-2729528/ by Paula Neumeyer
- unnamed light blue iris: https://www.pexels.com/photo/close-up-photo-of-right-person-eye-1435823/ by Наталья Кленова
- Iris of Scotty: photo taken by Scotty with express permission to appear in this game.
- Iris of The One Behind You: photo taken by The One Behind You with express permission to appear in this game.
- cool toned gummy color palette: https://www.color-hex.com/color-palette/62111 by little_watermelon
- cool orange color palette: https://www.pinterest.com/pin/800726008734106899/ by Color Palette Ideas
- hands coated in deep red color palette: https://www.pinterest.com/pin/hands-coated-in-deep-red-color-palette--761389880738973031/ by Color Schemes Ideas
- horror theme color palette: https://www.color-hex.com/color-palette/48418 by seminard
- free ui asset pack: https://opengameart.org/content/free-ui-asset-pack-1 by CamTatz on Twitter
- unnamed gray steel chain: https://unsplash.com/photos/42ui88Qrxhw by Markus Spiske
- a real human heart inside a jar: https://unsplash.com/photos/OermHGSUzhI by carmilo jimenez
- orange star decoration: https://unsplash.com/photos/8gLBzBob4U8 by Sebastian Fröhlich
- "ghost" - geometric kalidoscope drawing: by Pyrrhic Silva (Jake)
- from the hell: https://unsplash.com/photos/HedBdEbtUn4 by Samuele Giglio
- Three Chain Links – Die Historic: https://youtu.be/ZyVq4HF8oRw, Creative Commons Attribution 3.0