Highway Kings Slot by Playtech

The red truck pulls double duty. Five of them across a payline is the single biggest win in the game, and the same icon is also the wild, standing in for everything except the scatter. Better still, any line the truck helps complete pays double. So the symbol you most want to see is the one that both substitutes and carries a built-in x2.

Then there's the direction the lines read. All nine of them pay both ways, left to right and right to left, so a run of matching parts starting from the rightmost reel counts exactly like one starting from the left. Plenty of slots only score wins running one way. Here a near-miss on the left edge can still land as a full combo read from the other side.

The scatter is a chrome exhaust pipe, and it pays from anywhere on the reels rather than needing to sit on a line.

No free spins, no pick round, no jackpot chase. That was normal for a 2012 release, before every game piled on three bonus modes. The doubling truck wild and the two-way lines do all the work here, and the ceiling, somewhere around 2,297 times your stake, comes straight out of the base reels.

It looks the part. A glossy blue radial burst behind the reels, a red semi roaring in from one top corner and a green one from the other, gold HIGHWAY KINGS lettering wedged between them. The symbols are bold cartoon car parts drawn in thick outlines, chrome pistons, orange-rimmed steering wheels, gold-spoked racing tyres, a blue fuel pump, red dice and a spark plug firing mid-spark.