Is CubeRealm.io still online?

“The best online multiplayer block game in the browser.”

In this directory, CubeRealm.io sits in the .io wave collection and is tagged io (67 games), blocks (6 games), building (8 games) and 3d (15 games).

1. 1Open cuberealm.io in a desktop or mobile browser. It is the official site; avoid “unblocked” mirrors.
2. 2The homepage doesn't say whether you need an account. Many games here let you play as a guest and register later to keep progress.
3. 3The homepage doesn't list controls, so we don't guess. Most games show a tutorial or a “how to play” screen on first launch.

Browser

Plays in the browser from cuberealm.io (our inclusion rule).

Account

Not stated on the homepage.

Mobile

Not stated on the homepage.

Per-check history started on Oct 29, 2026. Status changes across all games are in the status log.