Alternatives

Products that do what CAPTCHA Royale does

Race to solve CAPTCHAs, last player standing wins

1
DOOM Captcha▲512
Captchas don't have to be boring
2021
2
Cap▲431
A lightweight, modern open-source captcha
2025
3
Capshun▲95
AI that creates captions & hashtags for photos in seconds 📸
2019
4
Squat Captcha▲231
The worst captcha ever! Forces you to do 10 squats
2020
5
Captcha Game▲4
A free browser puzzle that turns CAPTCHAs into play
Jul 2026 · captchagame.cc
6
Humans Not Invited▲237
CAPTCHA that filters out humans and only lets programs pass
2018
7
Graboxy maze CAPTCHA▲122
Brandable captcha that is fun & easy to solve
2021
8
Are You a Human?▲67
Ending the CAPTCHA agony in a unique way.
2013
9
WeHateCaptchas▲208
Keep the bots out without annoying your users
2019
10
CapGen Social Media AI Caption Generator▲109
Automatically generate social media image captions using AI
2023
11
Capme+▲116
The first AI powered caption generator.
2021
122M
2D multiplayer battle royale game▲163
2018 · surviv.io
13
Tiny Royale▲94
Zynga's new battle royale exclusive to Snap Games 👾
2019
14
Tetris 99▲80
Tetris is now a battle royale game
2019
15RC
Replace CAPTCHAs with WebAuthn passkeys for bot prevention▲71
I built Nocaptcha after getting frustrated with traditional CAPTCHAs both as a user and developer. WebAuthn passkeys offered a promising alternative that's both more secure and user-friendly. What makes Nocaptcha different: - Uses WebAuthn standard instead of puzzle-solving - No need for users to remember passwords or solve puzzles - Open source Current limitation: Working with W3C WebAuthn Community Group on true passkey disposal for this use case. Looking for feedback particularly on: 1. Integration experience 2. User experience compared to traditional CAPTCHAs
2024 · github.com
16RC
Replace CAPTCHA with Proof-of-Work▲89
2014 · hashcash.io
17
Caputchin▲2
A CAPTCHA replaced by a quick game humans win and bots can't
Jun 2026 · caputchin.com
18IB
I Built Paul Graham's Intellectual Captcha Idea▲29
PG has posted about improving social networks using something like an "intellectual CAPTCHA" many times [1][2][3][4] - "Make users pass a test on basic concepts like the distinction between necessary and sufficient conditions before they can tweet." I felt the same way. So I built one using a mix of simple math, logic, and Twitter/X Community Noted posts. Try sample questions here - https://mentwire.com/sample - without signing up. - Invites are temporarily open to HN users. - Onboarding test + one daily question before accessing feed, post or reply. - Posts authors are…
Apr 2026 · mentwire.com
19MG
Multiplayer game to help non-native English speakers improve vocabulary▲67
Hi HN, My friend and I just launched a vocabulary quiz game. It's a two Player Game where you challenge your opponent with a word and answer their challenge question. Whoever gets the highest score in a round of 5, wins. Currently, words are from Barron's 333 most essential GRE wordlist to help students preparing for the standardized test. You can check out the game at: [Play Store] https://play.google.com/store/apps/details?id=com.buildmyvoc... or [Hybrid web app in Ionic - Please allow some time to load] https://buildmyvocab.in/wordsgame We would…
2017
20
I am not a Robot▲81
A CAPTCHA game themed on pareidolia 🤖
2021
21
Quizelo▲8
Real-time quiz battle royale: 10 players, 1 winner
Jul 2026 · quizelo.app
22
CaptchaGame for Fun!▲1
Turn annoying CAPTCHAs into addictive mini-games
23d ago · captchagame.site
23
Clawptcha▲9
Reverse CAPTCHA that proves you're a bot, not a human.
Feb 2026
24TC
The Captcha Experiment▲15
2011 · thecaptchaexperiment.com

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