MOPO CHASE

Undercover cop in a black Passat estate. Jonne on a illegal white mopo. One road, twelve chases.

You have to push him off the road. Not bump him — push him. There is a bracket sliding left and right on the back of his mopo. Put your bonnet inside it, be faster than him at that moment, and he goes.

The siren is the catch. It has to be on when you hit him. No siren, no case: his lawyer files and the points come off. Three lawsuits and you are off the force.

But he hears the siren too. On the first chase he takes about eight tenths of a second to react. By the twelfth it is about a third of a second. Wail too early and he is already gone down the road. So you close in quietly, then the siren, then the hit. The green bar at the top of the screen is that window counting down. Let go of the siren and he calms back down after a second and a half.

Points are in the landing. Fence posts, hay bales, lamp posts, road signs, trees. The multiplier climbs with every object he goes through. Landing back on the tarmac costs you.

Traffic pulls over for the siren. Jonne does not. Oncoming trucks from chase five onwards. The road narrows and the bends get tighter the further you get.

Controls — phone

Drag anywhere to steer. SIREN pad bottom left, NITRO bottom right, BRAKE in the middle. Any extra finger on the screen is also nitro.

Controls — keyboard

Arrows to steer and brake, SPACE for the siren, SHIFT for nitro, P to pause, M for sound.

Under the hood

One HTML file, 78 kB. No image files, no audio files, no libraries. Every sprite is drawn with canvas commands. Every sound is made with WebAudio at the moment it plays — engine note follows the actual road speed, the music is a step sequencer with square waves and noise drums. It runs offline.

Best on a phone in portrait. Headphones help.