In Tunnel Rush, players control a small object (often a cube or sphere) that moves automatically through a series of twisting, turning, and color-shifting tunnels. 

Some features of the gameplay include:

Endless Runner Mechanics: The game continues until the player crashes into an obstacle, with the objective being to survive as long as possible and achieve a high score.

Dynamic Tunnels: The tunnels constantly change direction, color, and shape, creating a disorienting and thrilling experience.

Minimalist Controls: Players typically use simple touch or keyboard inputs to move left or right, making the game easy to pick up but difficult to master.

Visuals and Design
Tunnel Rush is known for its sleek, minimalist design and vibrant color schemes. The tunnels are often filled with neon lights, gradients, and geometric patterns, creating a visually stimulating experience. The game's design is both futuristic and psychedelic, adding to the immersive and fast-paced nature of the gameplay.