Lines Must Cross

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.