The job. You're a truck driver on the clock: your boss wants every parcel delivered, and fast. Start at the base, pick up cargo from each W warehouse, then bring it all to the D drop-off.

How you win. Two things decide your time: finding the most efficient route that visits every warehouse before the drop-off, and driving that route cleanly.

Steering, one input. Your truck always curves left on its own. Hold to steer right; release to drift back left. That's the whole scheme: tap and hold anywhere on screen (mobile), or use spacebar or the mouse button (desktop). To go straight, alternate between holding and releasing.

Easy or Hard. New players start on Easy: a slower, more forgiving truck that can't fail a run - driving off the map or losing your cargo just costs you time, not the delivery. Hard is the full challenge: full speed, and either of those ends the run on the spot. Once you've finished a run, an Easy / Hard toggle appears under the Tutorial and How To buttons on daily maps (the weekly board is Hard only, so the toggle is hidden there). Easy and Hard each have their own leaderboard, medals, and personal best - Easy's medal times are looser to match its slower pace.

A fresh track every day. Each day brings a brand-new road network, warehouses in new spots, and a new biome: desert, snow, city, moon and more. Each biome has its own colors and ground texture, but everyone races the same daily track.

Compete. Every day has its own global leaderboard. If you finish a run, you can tap any of the top 10 to race against a "ghost" replay of their run. If you get the gold medal, you can watch replays: click 'Create a replay', select players, and click 'Show replay'. The champion medal is for the really competitive players: it's 3/4ths of the way between gold and world record.

Read the terrain.

• ROAD is fastest: stay on it when you can.
• GRASS is slower, but cutting corners can save time.
• MUD makes the truck slide out: avoid it.
• ROCKS are solid and unsurpassable: hitting one will almost certainly throw off your cargo.

Mind your cargo. Watch its color: when it turns red, it's about to fall off. Ease off and drive straight or on roads to let it settle and recover.

Getting around.

Pause the run: click the timer on the bottom. To resume, click it again.

Restart or quit mid-run: the top-left menu on mobile, or Backspace to restart and Escape to quit on desktop.

Replay earlier days: swipe the minimap on the top to navigate to earlier or later days.

After you obtain a gold medal, you can switch between the daily map and the much larger weekly challenge using the Daily / Weekly toggle at the bottom. On the weekly map, a small arrow by the truck points you to the closest warehouse (green once they're all done, pointing to the drop-off), but you can pick another order.

To race against your personal best (PB), click the 'PB' tile. To race against another player's ghost, click a player in the leaderboard. A camera icon will show up to indicate the ghost is enabled.