Turbo Karts

Turbo Karts is a kart racing game for up to four real drivers, played live in the browser across seven circuits. You hold the throttle yourself — W or the up arrow on a keyboard, a trigger on a gamepad, a pedal under your right thumb on a phone — and almost everything that decides the race happens in the two or three metres either side of the racing line. Lifting off is a real move here, not just an absence of one: the arc your kart can draw depends on how fast it is going, so the throttle is half of the steering.

The question every corner asks is where to lift and where to brake. Every circuit has corners that genuinely cannot be taken flat out — not as a difficulty setting, but as geometry: the corner is tighter than the arc your kart can draw at top speed. Slowing down tightens your turning circle, so the corner is a trade rather than a wall. Arrive too fast and you run wide onto the grass, where your top speed drops by more than half and the two seconds you saved on the approach cost you five on the exit. Arrive slightly slow and the kart behind is alongside you before the apex.

Grass is the other half of that trade, and it is punishing on purpose. In a lot of browser racers the run-off is barely slower than the track, so the fastest line is a straight one through every corner and the circuit stops mattering. Here the asphalt is worth staying on, which means the kerbs mark a real edge and the racing line is a real thing to learn rather than a suggestion.

Item boxes sit in fixed rows across the track rather than appearing at random, so they are a route decision instead of a lottery. There are three things in them. A boost is worth several kart lengths on a straight and almost nothing in a corner, where the extra speed only pushes you wide. A rocket follows the racing line ahead of you and spins out the first kart it reaches. A mine drops behind you and simply waits, which makes it the only item that defends a lead rather than attacking one.

What you draw depends on where you are running, and that is deliberate rather than a difficulty setting. The leader mostly pulls mines; whoever is last mostly pulls rockets. Give everyone the same odds and the driver in front finds a rocket, extends, and the race is decided at the first corner — which is why every kart game worth playing has weighted the boxes this way for thirty years. It means a bad start is recoverable and a lead is something you have to defend rather than something you simply hold.

Getting hit costs you about a second and all of your speed, which at this pack size is usually a place. That is enough to matter without being enough to ruin a race, and because a spin is short you are rarely watching rather than driving.

There are seven circuits and they are built to ask different questions rather than to look different. Sunset Bay is the balanced one: long straights and wide sweeps, where a boost is worth the most and a rocket has room to find you. Dune Pass is the longest circuit by a wide margin: a full straight down the start, then long sweeps and a figure-eight of switchbacks through the interior, with eight karts on the grid and a lap that takes long enough for the field to string out and regroup more than once. Alpine Ridge is short and technical over four laps instead of three — the line breaks so often that rockets rarely reach anyone, and the race is decided almost entirely on where you brake.

The remaining four each change one rule rather than repeating the same one with a different number. Frost Loop is ice: the grip figure is a quarter of the usual, which stretches how long the kart keeps sliding sideways after you have already turned the wheel, so every input has to be made earlier than feels right. Neon Night takes away sight distance instead of grip — you are racing into fog under floodlights on a longer lap than the others, so there is more circuit to memorise and the corner you think you know arrives before you can see it. Harbour Mile earns its name: a long waterfront straight along the quay, then an inland loop that folds back through the container yard, with eight karts on the grid and enough road that a rocket fired down the quay has a real chance of finding someone. Ridgeback is four laps of back-to-back reverse corners, where the exit of one is already the entry of the next and a line that was fast through the first is wrong for the second.

The circuits are not reskins of one layout. Each one is a closed centre line that everything else derives from — the road surface, the rival racing line, the item box positions and the running order all come from the same curve — which is also why they can be checked automatically: every corner is measured against the turning circle your kart can actually draw, so a corner that is physically impossible cannot reach you.

Multiplayer puts up to four real drivers on the same grid, and there is one way in: press it and you are on a grid within seconds. Empty slots are filled by rival karts so a race never waits for a full lobby. Everyone sees the same colours, the same grid positions and the same order, because all of it is derived from the grid itself rather than decided on each device — the driver you see in green is green on every screen.

If the connection drops, the race does not: it keeps running instead of freezing, and a driver who gets back online is returned to their own place in the running race instead of starting over. The whole thing runs in the browser with nothing to install. It reads a keyboard, a gamepad — analog stick for proportional steering, analog triggers for throttle and brake — or a touchscreen, where your left thumb gets two steering pads with the item button just above them, and your right thumb gets a throttle and a brake. Your driver name is remembered between visits.

Hold W or the Up arrow for the throttle — the acceleration is yours, not automatic. Steer with A/D or the left and right arrows, brake with S or Down, and fire your item with Space. A gamepad works too, with the stick for proportional steering and the triggers for throttle and brake. On a phone your left thumb gets two steering pads with the item button just above them, and your right thumb gets throttle and brake.

Braking genuinely tightens your turning circle, so the tight corners have to be slowed for, and running wide onto the grass costs you more than half your top speed. Item boxes are weighted by position: the leader mostly draws mines to defend with, whoever is last mostly draws rockets, and a boost is worth several kart lengths on a straight but almost nothing in a corner. Seven circuits, with grids of four to eight karts over three or four laps.

The game opens straight onto the starting grid of a solo race and waits for your first touch of the throttle. Multiplayer puts up to four real drivers on one grid - the Online button above that grid matches you in seconds, and rival karts fill any slot still open at the start.