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Lines Must Cross
Lines Must Cross is an incremental graph game about firing mathematical functions and earning progress when they intersect. Click to spawn lines, unlock new function types, and grow a living coordinate system.

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Features
Single-player
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔
This game is not yet available on Steam

Planned Release Date: 2026

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About This Game

Shoot functions. Find intersections. Earn money.

In Lines Must Cross, every click spawns a mathematical function onto a living coordinate system. When your shot intersects the target function, it generates money, the farther from the origin the intersection occurs, the higher the reward.

Intersections don’t happen by chance alone.

Expanding the grid increases the space where valuable intersections can occur. Unlocking new function types raises the chance of multiple intersections per click. Every upgrade shifts the balance between reliability, reach, and reward.

Over time, a simple graph turns into a complex system.

What starts as a single line grows into layered functions, wider coordinate ranges, and richer intersection patterns.

Lines Must Cross is a calm, system-driven game about visual math, intuition, and growth. It rewards understanding over speed and curiosity over reflexes.

System Requirements

Windows
macOS
    Minimum:
    • OS: Windows 10 (64-bit)
    • Processor: Intel Core i3 (4th gen)
    • Memory: 4 GB RAM
    • Graphics: Integrated graphics (Intel HD Graphics)
    • DirectX: Version 11
    • Storage: 200 MB available space
    Minimum:
    • OS: macOS 11
    • Processor: Apple Silicon or Intel-based Mac
    • Memory: 4 GB RAM
    • Graphics: Integrated graphics
    • Storage: 200 MB available space
* Starting February 15, 2024, the Steam Client will no longer support 32-bit games or macOS 10.14 or lower.
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