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Cave Digger - Play Free in Your Browser

Every gem you grab loosens something above you.

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Dig through dirt to collect gems and reach the exit before boulders find you. Expect a challenge best described as "Physics puzzles at pickaxe speed", at a pace that could be summed up as "Deliberate - Until gravity isn't". Controls are instant: Arrows / WASD to dig and move; on mobile, swipe takes over. Underneath runs the DNA of Boulder Dash (First Star Software, 1984), recoded from zero for the web. Playing costs nothing - Cave Digger lives on our Puzzle Arcade row and starts in the browser with one click.

When a plain high score stops being enough, today's daily Digger challenge deals every player the identical seeded run until midnight UTC, and the global Cave Digger leaderboard keeps the score.

The History of Boulder Dash

Cave Digger draws inspiration from Boulder Dash - First Star Software, 1984.

The gravity puzzle / dig-and-collect blueprint was drawn by Boulder Dash at First Star Software in 1984. Our Cave Digger traces that gravity puzzle / dig-and-collect line faithfully, rebuilt from zero for the browser and wired to daily seeds and a worldwide scoreboard.

Fast facts about Boulder Dash
Original titleBoulder Dash
Debuted1984
Created byPeter Liepa and Chris Gray
GenreGravity puzzle / dig-and-collect
PublisherFirst Star Software
Core hazardBoulders fall the moment you clear beneath them
Our tributeCave Digger
Boulder Dash - the original arcade game
Boulder Dash (First Star Software, 1984) - the gravity puzzle Cave Digger is built on.
1984the year the boulders first fell
1wrong dig away from being crushed
2makers, Peter Liepa and Chris Gray

Want the whole story - the milestones, the legacy, the timeline? Read the full history of Boulder Dash → or browse games like Boulder Dash.

Inside the Cave Digger Cabinet

TL;DR: Dig through dirt to collect gems and reach the exit before boulders find you. Expect physics puzzles at pickaxe speed at a pace that's deliberate - until gravity isn't.

Cave Digger hands you a cave full of dirt, a pocketful of ambition, and physics that do not care about either. Dig tunnels to reach the gems, but remember: every boulder in this cave is held up by something, and that something is often the dirt you just removed. Boulders fall the instant they lose support, roll off rounded edges, and flatten careless miners.

Each level sets a gem quota - Hit it and the exit opens - And a timer that turns tidy plans into scrambles. The tension is glorious: dig slow and the clock eats you, dig fast and the ceiling does.

Our version keeps the classic tile-by-tile physics crisp on keyboard or swipe, chains levels with rising quotas, and offers a daily seeded cave where every player mines the identical layout. Same boulders, same gems, same countdown - See who walks out richest on the leaderboard.

Cabinet Specs

MissionDig through dirt to collect gems and reach the exit before boulders find you.
RowPuzzle Arcade
Skill curvePhysics puzzles at pickaxe speed
TempoDeliberate - Until gravity isn't
Lineage1984 (Boulder Dash era)
OriginalBoulder Dash - First Star Software, 1984 (full history)
Daily runSeeded challenge, resets midnight UTC
ScoreboardGlobal top 50, score-ranked

Learn Cave Digger in Five Moves

1

Dig through the dirt

Move into a dirt tile to carve it away and pass through. Dirt is also the cave's scaffolding - It is often the only thing holding a boulder over your head.

2

Mind what is above you

The moment a boulder loses its support, it falls. A falling boulder is lethal; a resting one is just a wall - So always check the ceiling before you dig the floor.

3

Watch boulders roll

Boulders do not just drop - They roll off the rounded tops of other boulders and gems when there is space beside them. One dig can start a slide three tiles away.

4

Fill the gem quota

Each level shows how many gems you need. Collect that many and the exit opens - Everything past the quota is profit, if you live to spend it.

5

Beat the clock to the exit

Every cave is timed. When the quota is met, weigh each extra gem against the ticking seconds, and reach the exit before zero or the run ends where you stand.

Score Higher at Cave Digger

Sharpest tip

Read the whole cave before your first dig. Tunnels are permanent - You cannot put dirt back - So one greedy early dig can drop a boulder that seals off a gem forever.

  1. Approach gems from the side. Grabbing a gem from directly underneath a boulder stack is the genre's oldest funeral, because the gem may be the only thing holding the pile up.
  2. Trigger falls on purpose from safe ground. A hair-trigger stack never gets safer - Poke it loose from a protected angle now, rather than tiptoe past it while the timer screams later.
  3. Never pause under a hanging boulder. You can dash beneath one that has not started falling, but a moment's hesitation in its shadow is the difference between mining and archaeology.
  4. Leave pillars of dirt as brakes. Strip-mining a whole chamber feels efficient until every boulder in it moves at once - Untouched columns keep the ceiling honest while you work.
  5. Scout the expensive pockets early. Check the guarded gem clusters while the timer is fat, so your late-level route is a plan instead of a gamble.
  6. Leave when the quota says leave. The timer ends more runs than the boulders do, so once the exit opens, only detour for gems that sit on the way out.

House Rules & Spin-Offs

Boulder Dash originals

The First Star classics and their official sequels - Pure cave sets where every screen is a hand-built physics riddle.

Construction Kit caves

The 1986 kit let players design and share their own caves, making Boulder Dash one of the earliest games with a true level-editing community.

Repton

The 1985 BBC Micro strain, beloved in Britain for meaner puzzles, tighter quotas, and a lizard hero with no patience for sloppy digging.

Emerald Mine and Supaplex

The Amiga and PC descendants that layered in new objects and logic - Proof the falling-boulder rulebook could carry hundreds more levels.

Digger Questions, Answered

What makes boulders fall?
Gravity plus your shovel. A boulder drops the instant nothing is beneath it, and it rolls sideways off rounded objects like other boulders and gems when a gap opens beside them.
Can I outrun a falling boulder?
Sideways, often; downward, never. You can dash under a boulder before it starts to fall, but once one is dropping in your column, the only winning move happened two tiles ago.
How does the exit open?
Collect the level's gem quota and the exit unlocks. Reaching it before the timer expires completes the cave and sends you deeper, where quotas grow and layouts get meaner.
What happens when the timer runs out?
The run ends on the spot, gems and all. The clock is deliberately the cruelest hazard in the cave - Boulders you can outsmart, but time only ever falls.
Is dirt dangerous?
Dirt itself is harmless - It is the removal that bites. Every tile you clear changes what the cave's boulders are resting on, so think of digging as editing the level's physics.
Do gems ever fall like boulders?
Yes - Gems obey the same gravity, falling and rolling when their support goes. A falling gem is just as deadly as a boulder, which feels deeply unfair and absolutely is.
Is the daily Cave Digger challenge the same for everyone?
Yes. The daily cave is seeded from the date, so every player mines the identical layout with the same gems, boulders, and timer - The leaderboard measures nerve and route craft.
Can I play Cave Digger on my phone?
Yes. Swipe in any direction to move and dig, exactly as the arrow keys work on desktop. Careful thumbs survive longer than fast ones.

When Cave Digger finally lets you go, the puzzle arcade row has its siblings, the arcade glossary has the vocabulary, and the player FAQ has the house rules. Guide last tuned 2026-07-06.

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