ArxDa Science
A science adventure across 10 worlds
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© 2026 ArxDa · All rights reserved
ArxDa Science is a free science game for kids aged 7 and up. It was designed and developed by ArxDa.
The game can be played as a guest without any account. Accounts need only a username and a password: no email, no real name and no other personal details. There are no ads and nothing to buy with real money.
ArxDa makes original games that you can play in the browser, on any screen.
Version 1.0 · Designed and developed by ArxDa · Fonts: Fredoka & Nunito (SIL Open Font License)
ArxDa Science is made for children, so it collects as little as possible.
Your progress is stored only in this browser on this device (local storage). Nothing is sent to us.
The read-aloud button uses the voice that is built into your device. The text is spoken by your browser; nothing is sent to us.
Signed-in players can delete their account at any time under Me → Manage account → Delete account. This removes the account and all its online data straight away.
Questions? Contact us by email.
© 2026 ArxDa. All rights reserved.
“ArxDa Science”, its name, logo, characters, artwork, sounds, lesson design, questions, texts and source code are the exclusive property of ArxDa and are protected by copyright and international intellectual-property law.
You may play the game for personal, non-commercial use and in classrooms through its official website or an installed copy of that website. Without ArxDa's prior written permission you may not copy, reproduce, modify, translate, decompile, mirror, re-host, embed, sell, rent or distribute the game or any part of it, including its question bank, or create derivative works based on it.
Copies found on other websites will be reported through takedown procedures such as the DMCA.
For licensing, schools, partnerships or permissions, contact ArxDa by email.
Third-party assets: the Fredoka font (© 2016 The Fredoka Project Authors) and the Nunito font (© 2014 The Nunito Project Authors), licensed under the SIL Open Font License 1.1. The font files and their licenses are in assets/fonts/. Emoji are drawn by your device’s own emoji font.
You are inside another app's browser. Open this page in Safari first, then add it to your Home Screen.
Installed, ArxDa Science opens like an app and works offline. Leagues and accounts need an internet connection.