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Cube. Open door 3D

Cube. Open door 3D

454K plays 4.2 out of 5

Overview

Puzzle-platformer inspired by portal-style test chambers. Move through clean sci-fi rooms, pick up glowing cubes and place them on pressure plates to power doors, bridges, and elevators. Every room is a mini-logic task: sometimes one cube isn’t enough, sometimes the order matters, and sometimes you’ll have to jump first, then power the gate. Use your movement and your head: combine precise jumps with smart cube placement, watch where the cables go, and follow the energy lines to the exit. Short levels, clear goals, instant restarts — perfect for quick sessions. Can you activate every gate and escape the chamber?

Videos and screenshots

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13,226 players online

How to play

  1. Open the game

    Press Play now and the game opens on its own screen.

  2. Follow the in-game instructions

    The controls and goals are shown inside the game as you play.

  3. Use the game menu

    The floating button over the game reloads it, saves it to your favourites, or takes you back out.

Game instructions

Goal: place cubes on the marked plates, power the logic gates, and open the doors to the next area. Action order, power distance, and precise jumping matter. W, A, S, D, Q, Z Arrow Keys — move E, Left Mouse Button — pick up / put down cube Space, Right Mouse Button — jump Shift — sprint Escape — menu (restart level, sound on/off) Tips: Floor markings and highlights will show where to place the cubes. If you get stuck, open the menu and choose restart, then try a different sequence. When carrying a cube, plan your route in advance. For distant platforms, sprint first and jump from the edge.

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