Heat
they lose you at the corner, never on the straight.
a night city from above: steer your car to the bridge with a thumb stick or the arrow keys, and break each searchlight's line before it locks on
A searcher sees only down a straight line, so its beam stops at the first wall. The quickest way to the bridge is rarely the straight one: it is the one with a building between you and every beam. Held in a beam, it locks on; break the line before the ring closes and it loses you. Each island adds a light.
Concepts: light, geometry, perception.
An interactive you play with one thumb, on Wundr.