How do I take a shot?
Hold your finger or mouse button on the structure. Move to aim using the dotted arc, then release to fire. Release outside the play area to cancel. Wait for the reaction to settle before taking the next shot.
In the expanded browser preview and upcoming Android update, the reload indicator shows when another shot is ready. “Reloading…” means the current reaction is still settling; “Ready to fire” means you can aim again. It follows the actual game state, so it does not show an estimated countdown.
The heavy ball makes one solid hit. The split ball releases three fragments after its first impact. Pulse pushes one piece without direct impact damage; falling objects can still break. Early experiments use a fixed sequence. When ball buttons appear, choose a type before aiming; each type has its own remaining supply. Use the hint for a tactical suggestion; it does not take a shot for you.
What am I trying to do?
- Break: destroy every coral core. Falling cores can break too.
- Protect: destroy the cores while keeping the golden relic intact.
- Deliver: land every crate in its mint zone and let it settle. With multiple crates, match the numbers on the crates and zones.
- Combined: break every coral core and deliver every crate in the same experiment.
Hit a numbered relay to remove shields with the same number. Shielded pieces resist damage, and a relay can be protected by another relay. Read the connections before choosing your shot order.
The expanded 1.1 campaign has 120 experiments in 12 chapters and is being prepared for the next Android update. The first Android release contains 30 experiments. Complete an experiment to unlock the next one; new mechanics are introduced along the way.
Three stars require completing the experiment within its par without an extra ball. A win using only ordinary shots earns at least two stars. An assisted win earns one. Your saved best result never decreases when you replay. Retries are free.
Where is my progress saved?
Completed experiments, best stars and preferences stay on this device or in this browser. There is no player account or cloud sync. Switching away and returning to a still-running game preserves the current attempt. Closing the tab or app, or the operating system ending its process, restarts the current experiment; completed progress stays saved.
Browser private modes, blocked storage and clearing site data can prevent or erase saves. Keep only one RubbleLab game tab open at a time. Clearing data for games.corehive.org can also erase browser saves for other games on this hostname.
To reset or remove local information, see your data choices. We cannot restore a save that has been removed from your device.
Where can I get RubbleLab?
RubbleLab is available on Google Play. The current Android release has 30 experiments. The expanded browser preview has 120 experiments, and that expansion is being prepared for the next Android update. This website uses actual game captures.
RubbleLab is intended for adults aged 18 and over. This audience setting is separate from the content rating displayed by Google Play.
The game supports 18 languages: English, Russian, Ukrainian, German, French, Spanish, Italian, Brazilian Portuguese, Polish, Turkish, Indonesian, Arabic, Hindi, Simplified Chinese, Traditional Chinese, Japanese, Korean and Vietnamese. The website is in English, with the privacy policy also available in Russian.
Android advertising uses Google AdMob, with privacy choices where required. Optional rewarded ads offer one extra ball after a failed attempt. In experiments with selectable ammunition, this reward is one Heavy ball; it does not refill Split or Pulse. Occasional interstitials appear between completed experiments. Every experiment can be completed without ads, and retries are always free. Browser and Linux builds have no advertising SDK. See the privacy policy.
Something not quite right?
Email games@corehive.org. Tell us the experiment number, what you tried, and what happened. Include your device, operating system and game version; for browser issues, include your browser and version.
A screenshot or short recording can help. Remove unrelated personal information before sending it. We do not need passwords, payment information or your entire device logs.