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Life & fun · alternatives · 2026

24 alternatives to 99Floors

World's Hardest Game Challenge

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. 99Floors launched in 2018; newer entries below may have overtaken it.

  1. 1

    Harder than any game you've ever played

    2015 · addictinggames.com · its alternatives →

  2. 2

    Rock-paper-scissors challenge

    2024 · 1in1million.com · its alternatives →

  3. 3
    63▲98

    A puzzle-solving race against the world

    2021 · solve63.com · its alternatives →

  4. 4

    A basketball game. Can you win top 5 players in the world?

    2016 · facebook.com · its alternatives →

  5. 5

    The Original 3x3 Cube Advanced Difficulty

    2023 · rubiks.com · its alternatives →

  6. 6
    Mr Math▲102

    Math game. Looks easy. Is hard.

    2015 · play.google.com · its alternatives →

  7. 7

    This game will reveal how twisted your friends are.

    2017 · kickstarter.com · its alternatives →

  8. 8

    Minimal isometric avoidance game

    2016 · apps.apple.com · its alternatives →

  9. 9

    The hardest game you have ever played

    2017 · play.google.com · its alternatives →

  10. 10

    The simplest-hardest game

    2016 · play.google.com · its alternatives →

  11. 11
    haRdGB▲71

    The hardest RGB trivia game ever.

    2020 · apps.apple.com · its alternatives →

  12. 12

    Challenge your skills

    2022 · polyhedricom.com · its alternatives →

  13. 13
    Ludum▲67

    Everyone can be a part of a big challenge.

    2016 · ludum.com · its alternatives →

  14. 14

    The hardest Riddle on the Internet - Prove me wrong!

    2024 · expireddomains.com · its alternatives →

  15. 15

    The first fair word game challenge

    2016 · wordcrex.com · its alternatives →

  16. 16

    game, trivial, quiz, puzzle

    2022 · play.google.com · its alternatives →

  17. 17

    Hard & Addictive Game

    2015 · addictinggames.com · its alternatives →

  18. 18

    A pong game.

    2016 · apps.apple.com · its alternatives →

  19. 19

    The hardest game ever! Beautiful graphics and many levels!

    2018 · play.google.com · its alternatives →

  20. 20

    Hardest memory game ever created.

    2016 · play.google.com · its alternatives →

  21. 21

    One of the hardest and addictive memory games you can find!

    2016 · apps.apple.com · its alternatives →

  22. 22

    A puzzle game that will truly drive you INSANE!

    2016 · apps.apple.com · its alternatives →

  23. 23

    Master your skills in this fun, mind-boggling game

    2016 · apps.apple.com · its alternatives →

  24. 24

    Challenge yourself in Mars 30 extraordinary levels.

    2016 · nomadicbeargames.com · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →