PUZZLE / BROWSER PROJECT
TETR.IO
A block-stacking game with solo practice and multiplayer modes. Its original browser release offers an anonymous guest entry.
tetr.io
Before you open it
- A browser with WebGL support
- Keyboard controls; inspect the original Config screen for current bindings
- Registered and ranked features may have conditions beyond anonymous entry
Getting started
- Read the original terms and rules before joining.
- Use a guest name, or leave the name blank as the entry screen permits.
- Choose Solo for practice and inspect Config before a round. Multiplayer is a separate choice.
What we checked
Leaving the username blank and joining created an anonymous guest session. Solo displayed 40 Lines, Blitz, Zen and Custom choices. We did not play a round, join matchmaking or create a registered account.
Desktop Chrome ยท October 10, 2026
An anonymous menu check is not a verified multiplayer match. The optional desktop client is not needed for the browser entry we checked; mobile controls were not tested.
Current instructions on the original project (opens in a new tab)Independent editorial pick; not attributed to Radiant Optimizer.