PROTEIN DUEL

Legal Notice

Last updated: August 13, 2026

Operator

Protein Duel is run by a private individual as a non-commercial hobby project — it is not a registered business activity. Nothing is sold on the site and there is no user registration.

Contact: exiztern@gmail.com

What this site is

Protein Duel is a free browser game in the "higher/lower" style — you guess which food has more protein per 100g. Nothing is purchased, no login is required, and no account is needed. The game runs entirely in your browser from static files, with no backend server or database on the operator's side.

Disclaimer

The game is provided "as is", for entertainment. Protein values are approximate averages (source: USDA FoodData Central) used purely for gameplay purposes — do not treat them as verified nutritional or medical data, and do not rely on them when planning a diet. The operator does not guarantee uninterrupted availability or error-free operation of the site.

Content and licensing

The name, visual design, and code of Protein Duel belong to its author.

Food photographs come from Wikimedia Commons and are used under their respective free licenses (CC0, CC BY, CC BY-SA, or public domain); the source and author for each photo are listed below. Nutritional data comes from the public USDA FoodData Central database.

Photo credits (75)
  • Whey Protein — Tony Webster from Minneapolis, Minnesota, United States, CC BY 2.0. source
  • Parmesan — unspecified, CC BY-SA 3.0. source
  • Chicken Breast — kakyusei, CC0. source
  • Beef Steak — Markus Spiske, Freeforcommercialuse.net, CC BY 3.0. source
  • Turkey Breast — Missvain, CC BY 4.0. source
  • Salmon — Protein Duel (AI-generated), Original artwork.
  • Peanut Butter — User-provided, User-provided.
  • Shrimp — User-provided, User-provided.
  • Almonds — HaJunkiyada, CC BY-SA 4.0. source
  • Cottage Cheese — Stu Spivack - flickr.com, CC BY-SA 2.0. source
  • Cashews — hz_westfalen_de on Pixabay, CC0. source
  • Walnuts — Ivar Leidus, CC BY-SA 4.0. source
  • Egg — HungryHuy, CC BY 2.0. source
  • Oats — User-provided, User-provided.
  • Greek Yogurt — Takeaway, CC BY-SA 4.0. source
  • Lentils — HaJunkiyada, CC BY-SA 4.0. source
  • Chickpeas — AlixSaz, CC BY-SA 4.0. source
  • Tofu — Fumikas Sagisavas, CC0. source
  • Milk — Shixart1985, CC BY 2.0. source
  • Rice — Douglas Perkins, CC0. source
  • Broccoli — BrokenSphere, CC BY-SA 3.0. source
  • Avocado — Ivar Leidus, CC BY-SA 4.0. source
  • Banana — Wilfredor, CC BY-SA 3.0. source
  • Apple — Abhijit Tembhekar from Mumbai, India, CC BY 2.0. source
  • Ice Cream — foodiesfeed.com, Foodiesfeed free license. source
  • Watermelon — foodiesfeed.com, Foodiesfeed free license. source
  • Pork Chop — Protein Duel (AI-generated), Original artwork.
  • Bacon — User-provided, User-provided.
  • Sardines — This illustration was made by Citron You must credit this : Citron / CC-BY-SA-3.0, CC BY-SA 3.0. source
  • Emmental — Coyau, CC BY-SA 3.0. source
  • Mozzarella — Popo le Chien, CC BY-SA 3.0. source
  • Ricotta — Saggittarius A, CC BY 4.0. source
  • Feta — unspecified, CC BY-SA 3.0. source
  • Sesame Seeds — Protein Duel (AI-generated), Original artwork.
  • Rye Bread — Schekinov Alexey Victorovich, CC BY-SA 4.0. source
  • Brussels Sprouts — Rasbak, CC BY-SA 3.0. source
  • Grapes — eflon (Alex from Ithaca, NY), CC BY 2.0. source
  • Strawberries — User-provided, User-provided.
  • Tempeh — Sakurai Midori, CC BY-SA 3.0. source
  • Goose Breast — User:Nostrifikator, CC0. source
  • Mussels — Benutzer:Darkone, 26. Oktober 2003, CC BY-SA 2.0. source
  • Skyr — Schnee (talk), CC BY-SA 4.0. source
  • Cheddar — User-provided, User-provided.
  • Potato — Engin Akyurt, Unsplash license. source
  • Orange — Ivar Leidus, CC BY-SA 4.0. source
  • Mango — Ivar Leidus, CC BY-SA 4.0. source
  • Pineapple — Suniltg at Malayalam Wikipedia, CC BY 3.0. source
  • Ground Beef — unspecified, CC BY-SA 3.0. source
  • Strawberry Cake — foodiesfeed.com, Foodiesfeed free license. source
  • Pumpkin Seeds — Protein Duel (AI-generated), Original artwork.
  • Edamame — Fumikas Sagisavas, CC0. source
  • Chia Seeds — Protein Duel (AI-generated), Original artwork.
  • Duck Breast — Protein Duel (AI-generated), Original artwork.
  • Sunflower Seeds — Protein Duel (AI-generated), Original artwork.
  • Quinoa — Protein Duel (AI-generated), Original artwork.
  • Octopus — T.Tseng, CC BY 2.0. source
  • Tuna — Luca.favorido, CC BY-SA 4.0. source
  • Egg + Avocado (plate) — Meg H, CC BY 2.0. source
  • Lentils + Rice (plate) — Subhashish Panigrahi, CC BY-SA 4.0. source
  • Beef Steak + Rice + Broccoli (plate) — HaJunkiyada, CC BY-SA 4.0. source
  • Rice + Avocado (plate) — HaJunkiyada, CC BY-SA 4.0. source
  • Cottage Cheese + Rice (plate) — HaJunkiyada, CC BY-SA 4.0. source
  • Chicken Breast + Rice (plate) — HaJunkiyada, CC BY-SA 4.0. source
  • Egg + Tuna (plate) — HaJunkiyada, CC BY-SA 4.0. source
  • Egg + Chickpeas + Avocado (plate) — foodiesfeed.com, Foodiesfeed free license. source
  • Egg + Cottage Cheese + Bread + Walnuts (plate) — foodiesfeed.com, Foodiesfeed free license. source
  • Scrambled Eggs with Spinach and Tomato (plate) — foodiesfeed.com, Foodiesfeed free license. source
  • BLT Sandwich (Bacon, Bread, Tomato) (plate) — foodiesfeed.com, Foodiesfeed free license. source
  • Smoked Salmon Wrap with Cream Cheese (plate) — foodiesfeed.com, Foodiesfeed free license. source
  • Spaghetti Bolognese (plate) — Danijela Prijovic (Unsplash), Unsplash license. source
  • French Toast with Banana and Blueberries (plate) — Joseph Gonzalez (Unsplash), Unsplash license. source
  • Shrimp Ramen with Egg (plate) — Michele Blackwell (Unsplash), Unsplash license. source
  • Duck Breast + Potato + Mushrooms (plate) — Gerda Arendt, CC0. source
  • Glazed Donut Stack (plate) — Kobby Mendez, Unsplash license. source
  • Flank Steak + Sweet Potato + Green Beans (plate) — Protein Duel (AI-generated), Original artwork.

Hosting

The site is hosted on Cloudflare's network. Cloudflare may process standard technical data (such as IP address and browser type) while delivering the site, under its own policies — see cloudflare.com/privacypolicy.

Consumer disputes

Nothing is sold on this site, so no consumer contract exists between the operator and players, and there is nothing to resolve out of court.