Prism Factory is a strategy indie simulation game on PC centered on directing and transforming beams of white light to fulfill persistent orders for specific colors and intensities. Players build optical setups on a grid using a limited set of devices, all while respecting strict conservation rules that prevent any creation or amplification of light. The experience unfolds across endless waves where the board grows more complex without ever resetting completed demands.
Gameplay
The core loop revolves around a single resource: light itself. Every lamp starts with a fixed brightness that never increases, and every action must balance exactly what it consumes and produces. A beam travels in straight lines until it encounters a device. Mirrors redirect paths, prisms split white light into red, green, and blue components, splitters divert precise fractions such as halves, quarters, or eighths while allowing the remainder to continue, and mergers recombine colors to match exact order requirements. No device invents new light or alters total energy, so every split or blend represents a deliberate trade-off.
Orders arrive as specific color and intensity requests. Once accepted, they remain active indefinitely, requiring continuous supply from the growing network of beams. Waves introduce new orders or increase demands on existing ones, while additional lamps appear periodically on different parts of the board. The challenge lies in routing these new sources back into the existing system without wasting output. Excess light delivered to a port or beams that terminate unused represent the only form of loss, and identifying such slack becomes the key to progress when an order falls short.
Four devices form the entire toolkit, yet they enable arithmetic outcomes none can achieve alone. Splitters provide only binary fractions, so reaching values like three or five requires combining multiple splits and merges. The board displays all current light flows and shortfalls at all times, leaving players to reason through rewiring solutions. A single adjustment to one device can propagate changes across distant orders, rewarding careful observation over trial and error.
Game Modes
Ten distinct maps offer varied starting conditions, including different wall placements, initial lamp positions, and color profiles. These maps unlock progressively based on performance, with one map generating a fresh layout each session for added variety. A separate mode removes the wave timer entirely, allowing uninterrupted focus on optimization without the pressure of customer departures.
Every session runs on waves that either add orders or escalate existing ones. When a wave timer expires, the furthest unmet order causes a customer to leave. Enough departures end the run. Players may also voluntarily abandon an order if the layout proves unworkable. Both actions carry the same penalty, emphasizing foresight in layout planning. The score simply records the highest wave reached, turning each attempt into a record of how long the interconnected light network could be sustained.
Core Constraints and Progression
Progression never simplifies the task through stronger lamps or additional resources. New lamps add supply only after players extend beams to connect them, increasing the routing workload instead. Orders stay on the board permanently once taken, so the visible layout functions as a cumulative record of commitments. This design keeps every element visible and reason-able, with no hidden inventories, power systems, or currencies to track.
The absence of amplification mechanics forces repeated use of the same four devices to construct values outside their individual capabilities. Boards that appear impossible often contain wasted light already present, such as a tapped beam ending at a wall or a port receiving surplus. Rewiring these inefficiencies loosens the entire network, creating the satisfying moments that define repeated play.
Is It Worth Playing?
Prism Factory suits players who enjoy deliberate, visible systems where success depends on tracing cause and effect across a single shared resource. Its minimal toolbox and strict conservation rules create depth through combination rather than expansion, rewarding those comfortable with spatial reasoning and incremental optimization. The endless nature and map variety support repeated sessions focused on pushing further waves or refining layouts on familiar boards.
Those seeking quick matches or external progression systems may find the persistent demands and growing complexity less appealing. The game provides a clear, self-contained loop with immediate feedback on every placement, making it accessible after a short learning period while offering substantial depth for extended engagement. Its rendered visuals, free of pre-made assets, further emphasize the focus on procedural light interactions over decorative elements.
