Last reviewed 29 October 2026
Privacy
This page explains the limited information used by Chemisode Games and the optional global leaderboards.
Playing without an account
The games do not require a Chemisode account and do not ask for an email address, real name, date of birth, school or precise location.
Global leaderboards
If a player chooses to submit a score, the score service stores the four-character arcade name selected by the player, the score, submission time and game-specific statistics used by that game. The service keeps each game’s leaderboard separate. Players are instructed not to use their real name. Choosing not to submit leaves the score off the global leaderboard.
Temporary security information
To reduce spam and fake scores, the score service temporarily stores one-way salted hashes associated with a browser game ID and network address. Raw network addresses are not stored in the game database. One-use game sessions and rate-limit records expire automatically.
On-device storage
Games may use browser local storage for settings, local best scores, career statistics, a four-character arcade name and a random game-client ID. These can be removed using the browser’s site-data controls.
Optional two-player online matches
Chemi-Ships and Mystery Match VS Online use a temporary six-digit game PIN and an anonymous session token for each participant. The Cloudflare multiplayer service temporarily stores room settings, moves, private ship positions or Mystery Match secret items, question results and limited connection activity until each room expires and is cleaned up. Opponents do not receive hidden fleets or Mystery Match secret items before they are revealed through permitted gameplay. A private session token is saved on the device for temporary reconnection, including after closing a tab; it is cleared when a match is explicitly ended or expires. Do not use shared devices to rejoin another player’s session. Rate-limit checks use one-way hashes derived from network addresses; no student names or accounts are requested. Online play requires a connection to the separate Chemisode multiplayer service.
Cloudflare Turnstile
Cloudflare Turnstile is used only when a player submits a global score. Cloudflare processes the verification under its own privacy terms.
Score removal
To request removal of a leaderboard score, email support@chemisode.com and include the game, four-character arcade name, approximate score and approximate submission date. Do not send passwords or unnecessary student information.