Collect the required number of diamonds in each cave, then reach the exit before time runs out. Each cave is a puzzle — plan your route carefully, because one wrong move can trap you or bring a boulder crashing down on your head.
Controls
Click + ADD KEY next to an action, then press the key you want to bind. Click x on a key to remove it.
Grab — Hold the grab key and press a direction to dig dirt or collect a diamond in that direction without moving. This replicates the original joystick fire-button behavior.
Action
Keys
Back to menu
ESC
The Cave
Each cave is a grid of tiles. Here's what you'll encounter:
Dirt — Walk through to clear a path
Brick Wall — Indestructible barrier
Steel Wall — Indestructible border
Boulder — Falls when unsupported. Push horizontally.
Diamond — Collect these! Falls like boulders.
Exit — Opens when you have enough diamonds
Boulders & Diamonds
Boulders and diamonds fall straight down into empty space
They slide off the top of other boulders, diamonds, and brick walls — first to the left, then to the right
A falling boulder or diamond kills you on contact
You can push a single boulder left or right, but only if the space beyond it is empty
Enemies
Firefly — Patrols along walls in a counter-clockwise pattern. Kills you on contact. Drop a boulder on it to destroy it (explodes into empty space).
Butterfly — Patrols along walls clockwise. Kills you on contact. Drop a boulder on it to create a 3×3 field of diamonds — the key to beating many caves!
Advanced Mechanics
Magic Wall — Activated when a boulder falls into it. Converts falling boulders to diamonds (and diamonds to boulders) for a limited time. Listen for the buzzing sound.
Amoeba — Spreads slowly into adjacent dirt and empty space. If completely surrounded and unable to grow, it turns into diamonds. If it grows too large, it turns into boulders. Kills you on contact.
Scoring
Each diamond is worth a set number of points (varies by cave)
Diamonds collected after reaching the quota are worth double points
Remaining time converts to bonus points when you complete a cave
Extra life awarded at 500 points
Tips for Beginners
Think before you dig. Removing dirt can cause chain reactions — boulders above will fall. Plan your route before committing.
Use gravity to your advantage. Lure boulders into falling where you want them. Trap enemies by collapsing passages above them.
Butterflies are diamond factories. In caves where you need lots of diamonds, find a butterfly and drop a boulder on it for a 3×3 diamond bonus.
Don't collect diamonds too fast. Watch for boulders that might fall into your path as you clear dirt to reach diamonds.
Listen for the magic wall. When active, it hums. Drop boulders in from above to convert them into diamonds below.