Code Highway — six languages, four lanes. Steer into the one that's true.
Pick a language and the road starts moving. Every sign shows a short piece of code and paints three answers onto three of the road's four lanes. Steer into the true lane before the sign reaches you and it pays ten. Steer into a wrong one and it costs six and a life. The fourth lane is always left open: drift into it and nothing happens, which is exactly what not guessing should cost.
Play Code Highway →Free, and no account needed — play as a guest. Runs in the browser — nothing to install.
Chosen once, before the first sign, and kept for the whole drive:
The basics every language shares, asked in that language's own syntax:
A sign is read at speed with a car already drifting toward it, so the code on it is short — a few lines, never a puzzle. The difficulty climbs as the road goes on:
| Signs | Band | What it asks of |
|---|---|---|
| 1–4 | easy | somebody who has written a first script or class |
| 5–8 | medium | somebody who has finished a tutorial |
| 9 onward | hard | somebody who has read another person's code and worked out why it broke |
| Lane | What it does |
|---|---|
| True | pays 10 |
| Wrong | costs 6 and a life |
| Open | nothing — no points, no life lost |
The road speeds up. The first sign gives you six and a half seconds; by the twelfth it is down to just over four, and it holds there for as long as you last. Three wrong lanes end the drive, however far it got.
The first signs assume you have written a few lines in the language you pick. If you have not, the open lane is always there — take it, and read the answer when the drive ends.
Yes. Swipe across to change lanes, or use the steer columns down each edge of the road. On a keyboard, the arrow keys steer and 1–4 jump straight to a lane.
Yes. Every game on SULULU is free and there is nothing to buy.