Grow a 3D neural network from a single neuron. Workers haul energy along radiant paths, buildings amplify every passing signal, and a 100-node skill tree reshapes how your synapse evolves. A calm, incremental idle game about watching complexity bloom — tinted in whatever colors you choose.

<h2 class="bb_tag" >■ Watching Is the Reward</h2>Synapse Idle is a relaxing incremental idle game.Nothing chases you. Nothing fails. Nothing fights back.A 3D neural network radiating from a core, workers shuttling along its paths,and shockwaves rippling each time a signal passes — that view itself is the point. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/c0a4aeb144aee7bcbe41aaa72f3e5d6c.poster.avif?t=1777020574" width=1170 height=494 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/c0a4aeb144aee7bcbe41aaa72f3e5d6c.webm?t=1777020574" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/c0a4aeb144aee7bcbe41aaa72f3e5d6c.mp4?t=1777020574" type="video/mp4"></video><h2 class="bb_tag" >■ Room for Strategy</h2>Close paths offer fast round-trips; distant paths carry denser resources.Where you place a building on a path changes how it feels,and buildings on the same path can amplify each other's effects. How deep you optimize is up to you — a rough layout still grows the network. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/d3ef4be1995ff860b8bae0a5772f36e0.poster.avif?t=1777020574" width=1170 height=494 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/d3ef4be1995ff860b8bae0a5772f36e0.webm?t=1777020574" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/d3ef4be1995ff860b8bae0a5772f36e0.mp4?t=1777020574" type="video/mp4"></video><h2 class="bb_tag" >■ A 100-Node Growth Tree</h2>The core hosts a skill tree across three branches: WORKER / BUILDING / NETWORK.Filler nodes for small stackable bonuses, Notable nodes for unique mid-size effects,Gate nodes that open new content, and Keystones that rewrite the rules of the game — grow your network across all 100 nodes. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/e03f5f8f231fad861b06b7c218242ca8.poster.avif?t=1777020574" width=1170 height=494 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/e03f5f8f231fad861b06b7c218242ca8.webm?t=1777020574" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/e03f5f8f231fad861b06b7c218242ca8.mp4?t=1777020574" type="video/mp4"></video><h2 class="bb_tag" >■ Your Synapse, Your Aesthetic</h2>Color-pick paths, workers, buildings, and backgrounds however you like.The core's appearance is composed of Outer / Outline / Inner parts — pick from 14 presets in total.Path-line shaders come in 4 styles too — Pulse Flow, Gradient, Dashed, and more. Slowly, but inevitably, it grows. Until your synapse is in full bloom — enjoy.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/8dee8145716a6979d75758b4605d4082.poster.avif?t=1777020574" width=1170 height=494 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/8dee8145716a6979d75758b4605d4082.webm?t=1777020574" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4652830/extras/8dee8145716a6979d75758b4605d4082.mp4?t=1777020574" type="video/mp4"></video>

Good Game Database

Synapse Idle Achievements