Deep Rift

About the Game

Deep Rift is an original 3D cave puzzle adventure with 50 caves in five chapters: the Whispering Tunnels, the Crystal Veins, the Sunken Halls, the Collapsing Deep and the Heart of the Rift. You guide Wren, a lantern-carrying explorer, one step at a time through ruined caverns. Push carved stones — and drop them into chasms to build bridges. Hold rune doors open with stones on pressure plates. Turn crystal mirrors on their pedestals and slide mirror sledges to bounce beams of light across the cave and into crystal sockets that open more doors; light crosses chasms and underground water that you can't. Cracked floor collapses behind you, so some paths can only be walked once. Every move can be undone, and your lantern oil — a generous move budget — keeps a lost explorer from wandering forever. Golden relics lie on harder routes: reach the portal for one star, carry every relic for two, and do it within par for three. Every cave was solved exactly by a computer search over every possible position, so each one has a solution and par is the true optimum plus a little slack. Keyboard, swipe or on-screen arrows, three graphics levels, progress saved in your browser.

How to Play

Move one cell at a time with the arrow keys, W A S D, a swipe, or the arrows at the bottom of the screen. Walk into a carved stone to push it one cell (you can't pull, and you can't push two at once). Push a stone into a chasm to fill it and make a bridge. Rune doors open while a stone (or you) stands on their pressure plate, or while a beam of light reaches their crystal socket. Beams travel in straight lines from glowing crystals; walk into a crystal mirror on a pedestal to turn it, or push a mirror on a sledge, to bounce the light where it needs to go — stones block light, but water and chasms don't. Cracked floor holds you once and collapses after you step off. Reach the portal to finish. Collect the golden relic for two stars, and use no more moves than par for three. Press U or Undo to take moves back; if your lantern runs out of oil (too many moves), the attempt ends and you can retry.

Controls

• Arrow keys / W A S D, a swipe or the on-screen arrowsMove one cell
• Walk into a stone or a mirror sledgePush it
• Walk into a crystal mirrorTurn it
• U or the Undo buttonTake a move back
• RRestart · Esc / P — Pause

Features

• ✓50 cave puzzles in five chapters, each solved exactly by computer
• ✓Push stones, bridge chasms and hold rune doors with pressure plates
• ✓Turn crystal mirrors and slide mirror sledges to guide beams of light
• ✓Underground water, crumbling floors and golden relics on harder routes
• ✓Unlimited undo, move-based par and three-star ratings
• ✓Keyboard, swipe and on-screen controls with Low, Medium and High graphics

Gameplay Tips

• •Before you push, check where the stone will end up — walls and corners trap it.
• •Light passes over chasms and water: aim the beam across places you can't walk.
• •Colours link things: an amber plate or socket opens the amber door, a violet one the violet door.
• •A mirror sledge can be pushed like a stone, but it bends light like a mirror.
• •Cracked floor is one-way: grab the relic before you cross it if you need to come back.
• •Undo is free — use it to try an idea and rewind.

FAQ