Free demo of marblebuilds. a 2D marble physics sandbox with puzzle, platformer, and campaign modes. Build marble races and logic machines using 50+ blocks. Browse community tracks and publish your tracks.

<h2 class="bb_tag" >About This Game (Demo)</h2>marblebuilds - DemoThis is a free demo of marblebuilds. It includes the complete Sandbox, Puzzle, and Platformer modes with 50+ blocks and an introductory Campaign. Browse community tracks and publish your own creations.---Design freely on an unlimited canvas, hit play, and watch marbles roll, bounce, explode, teleport, and react to the systems you've built.<h2 class="bb_tag" >Three Ways to Play</h2>Sandbox: Build anything, no limits. Race marbles, track finish times, and experiment freely on an endless canvas.Puzzle: Place a limited set of blocks to guide marbles to every star. Levels range from quick placements to deliberate, engineering-style thinking. Create and share your own puzzle levels, or try ones made by other players.Platformer: Take direct control of your marbles. Collect all stars to finish the level. Switch between marbles at any time. Freeze the action, pick a new marble, and continue.A built-in Campaign teaches you the blocks through increasingly creative levels.<h2 class="bb_tag" >Build Anything You Can Imagine</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/10500df329d37073a6e80e5560bcb2c1.poster.avif?t=1777141448" width=600 height=338 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/10500df329d37073a6e80e5560bcb2c1.webm?t=1777141448" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/10500df329d37073a6e80e5560bcb2c1.mp4?t=1777141448" type="video/mp4"></video>Use blocks to shape tracks, control motion, and create dynamic systems.<ul class="bb_ul"><li>Unlimited-size canvas</li><li>Grid-based building</li><li>Name, customize, and race your marbles</li><li>Save your creations locally</li></ul><h2 class="bb_tag" >Dynamic Physics &amp; Interactions</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/390453877945ac19b7450e9ac8cdd2c1.poster.avif?t=1777141448" width=600 height=338 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/390453877945ac19b7450e9ac8cdd2c1.webm?t=1777141448" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/390453877945ac19b7450e9ac8cdd2c1.mp4?t=1777141448" type="video/mp4"></video><ul class="bb_ul"><li>Boosters, springs, bumpers, and spinners</li><li>Gravity and antigravity blocks</li><li>Portals</li><li>Breakable paths and explosive marbles</li></ul><h2 class="bb_tag" >Logic &amp; Circuit Systems</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/ac6a129de5cd245787bb728ea54a908a.poster.avif?t=1777141448" width=600 height=338 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/ac6a129de5cd245787bb728ea54a908a.webm?t=1777141448" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/ac6a129de5cd245787bb728ea54a908a.mp4?t=1777141448" type="video/mp4"></video>Digital logic via wires, logic gates, timers, Memcells, marble-triggered inputs, and Interactive Buttons for custom controls. Build anything from a simple door trigger to a working computer.<h2 class="bb_tag" >Style, Color, and Decoration</h2><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4490070/extras/320e60cf87d21a20ae30ccb4252b01a6.avif?t=1777141448" width=1560 height=774 />Transform your marble run into an aesthetic masterpiece with a 16-color palette of blocks, signs, nature blocks, and marble color changers.<h2 class="bb_tag" >What's in the Demo</h2><ul class="bb_ul"><li>Sandbox, Puzzle, and Platformer modes</li><li>50+ blocks</li><li>An introductory set of Campaign puzzle levels</li><li>Community track browsing and sharing (up to 10 published tracks)</li></ul><h2 class="bb_tag" >Full Game Adds</h2><ul class="bb_ul"><li>100+ gameplay-deep interactions</li><li>Blocks that move other blocks</li><li>Various marble sizes, filters, and elasticity</li><li>Wind Blowers</li><li>Glass and Regenerating Breakable blocks</li><li>Block Rotators, Placers, and Destroyers</li><li>Camera effect blocks</li><li>Unlimited track publishing</li><li>Full campaign with puzzle and platformer levels</li><li>... And more coming in future updates!</li></ul>

marblebuilds Demo

A 2D marble physics sandbox with puzzle, platformer, and campaign modes. Build marble races, logic machines, and tinker with endless contraptions with a 150+ block library. Browse community tracks and publish your tracks.

<h2 class="bb_tag" >About This Game</h2>marblebuilds is a creative 2D sandbox where you build marble races, contraptions, and logic-driven machines. Share your creations with the community, and challenge yourself in puzzle and platformer modes.Design freely on an unlimited canvas, hit play, and watch marbles roll, bounce, explode, teleport, and react to the systems you've built.<h2 class="bb_tag" >Three Ways to Play</h2>Sandbox: Build anything, no limits. Race marbles, track finish times, and experiment freely on an endless canvas.Puzzle: Place a limited set of blocks to guide marbles to every star. Levels range from quick placements to deliberate, engineering-style thinking. Create and share your own puzzle levels, or try ones made by other players.Platformer: Take direct control of your marbles. Collect all stars to finish the level. Switch between marbles at any time. Freeze the action, pick a new marble, and continue.A built-in Campaign teaches you the blocks through increasingly creative levels.<h2 class="bb_tag" >Build Anything You Can Imagine</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/10500df329d37073a6e80e5560bcb2c1.poster.avif?t=1778778983" width=600 height=338 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/10500df329d37073a6e80e5560bcb2c1.webm?t=1778778983" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/10500df329d37073a6e80e5560bcb2c1.mp4?t=1778778983" type="video/mp4"></video>Use 150+ blocks to shape tracks, control motion, and create dynamic systems. From simple downhill races to elaborate machines, marblebuilds is about experimenting, iterating, and seeing your ideas come alive.<ul class="bb_ul"><li>Unlimited-size canvas</li><li>Grid-based building</li><li>Name, customize, and race your marbles</li><li>Save your creations locally</li><li>Publish your builds and browse the community</li></ul><h2 class="bb_tag" >Move Everything</h2>The full game introduces block movers that bring your entire track to life. Instantly slide blocks, marbles, and circuits as a unit along the grid. Everything moves together.Circuits on moving blocks stay connected. Machines can reconfigure themselves mid-run.<h2 class="bb_tag" >Dynamic Physics &amp; Interactions</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/390453877945ac19b7450e9ac8cdd2c1.poster.avif?t=1778778983" width=600 height=338 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/390453877945ac19b7450e9ac8cdd2c1.webm?t=1778778983" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/390453877945ac19b7450e9ac8cdd2c1.mp4?t=1778778983" type="video/mp4"></video>Bring your builds to life with blocks that transform how marbles move and interact.<ul class="bb_ul"><li>Boosters, springs, bumpers, and spinners</li><li>Gravity and antigravity blocks</li><li>Portals</li><li>Breakable paths and explosive marbles</li><li>Marble size-changing, marble color-randomizing, and marble speed-filtering</li><li>Wind Blowers that push marbles with highly interactive forces</li><li>Create winding and splitting paths using Glass and Regenerating Breakable blocks</li></ul><h2 class="bb_tag" >Logic &amp; Circuit Systems</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/ac6a129de5cd245787bb728ea54a908a.poster.avif?t=1778778983" width=600 height=338 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/ac6a129de5cd245787bb728ea54a908a.webm?t=1778778983" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/ac6a129de5cd245787bb728ea54a908a.mp4?t=1778778983" type="video/mp4"></video>Marblebuilds includes a digital logic system. Marbles interact with wires, logic gates, timers, Memcells, and marble-triggered inputs, and the system outputs back into the physical world. Control your creations with Interactive Buttons and Keybinds. Build anything from a simple door trigger to a working computer.Use circuits to open trapdoors, spawn marbles, control launchers, play music, or push entire sections of your build.New builder blocks let your circuits change the world.Block Rotators, Placers, and Destroyers make the world transformative, especially using marbles.<h2 class="bb_tag" >Style, Color, and Decoration</h2><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4285270/extras/320e60cf87d21a20ae30ccb4252b01a6.avif?t=1778778983" width=1560 height=774 />Transform your marble run into an aesthetic masterpiece with a palette of blocks, signs, and nature blocks.<ul class="bb_ul"><li>Color-customizable blocks (16 colors)</li><li>Signs with custom text</li><li>Nature blocks like grass, logs, leaves, and rocks</li></ul><h2 class="bb_tag" >Create, Share, Discover</h2>Build contraptions, run simulations, tweak designs, and discover unexpected interactions. Publish your tracks to the community with no limits, browse what others have built, and compete to beat the best time on Platformer level leaderboards.