CNET logo Why You Can Trust CNET

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. Reviews ethics statement

Anki Drive review: Racers are next-gen slot cars...with lasers

The Anki Drive game is a modern mashup of slot cars and laser tage played with tiny self-driving cars powered by your iPhone.

Antuan Goodwin
Antuan Goodwin Reviews Editor / Cars

Antuan Goodwin gained his automotive knowledge the old fashioned way, by turning wrenches in a driveway and picking up speeding tickets. From drivetrain tech and performance to car audio installs and cabin tech, if it's on wheels, Antuan is knowledgeable.

10 min read

Some of you may be too young to remember slot cars, but I do. These tiny electric toys whipped around a small plastic course, powered by small groves in the track's surface. The player could only control the car's speed: too slow and you'd lose; too fast and the car would go flying off course.

Anki Drive

Anki Drive

The Good

<b>Anki Drive</b>'s racers effortlessly pair with and are controlled by compatible iOS devices running the host app via Bluetooth LE. The app's AI guides cars around the included track. The cars charge quickly in their stations.

The Bad

Only one track configuration is available. Cars can't avoid nonplayer obstructions, so keep your toes clear of the track. At time of review, only one race mode is available.

The Bottom Line

The advanced, AI-driven Anki Drive bridges the gap between digital racing games and physical slot cars with a laser tag twist; we just wish there was more than one course to race around.

Slot cars have stepped into the 21st century with the debut of Anki Drive. These tiny electric toys guide themselves around a small plastic course, but are no longer confined to a single grooved lane. They can weave and pass with computer-controlled precision while the player controls the action -- not with a wired trigger, but with an iPhone, an app, and Bluetooth connectivity.

As if freeing slot cars from their single-tracked slots and wires weren't enough, Anki has also given them guns and artificial intelligence and instructed them to take you out.

With Anki Drive, robotics meets AI (pictures)

See all photos

What's in the box? Crack open the massive, black and red box (nearly 4 feet long and weighing 9 pounds) to be greeted with the various parts of the Anki Drive starter kit. There are two included cars with charging stations, the Anki Drive track, a 2A USB wall charger, a USB charging cable that splits into three Micro-USB tips, and a tire cleaning pad.

There are also a few more parts of the system that you'll need to play, which are not included in the box. You'll need a compatible iOS device (nearly any that supports Bluetooth Low Energy will work) and the Anki Drive app, which is a free download from the iOS App Store.

The cars
The Anki Drive ships with two cars measuring 3.25 inches from nose to tail and 1.75 inches wide. The wheelbase is about 1.5 inches.

They feel like plastic toys, so don't expect anything too sophisticated here. The two vehicles are cast from identical, futuristic race car molds, only differentiated by their color palettes. The first car, Kourai, is molded of yellow plastic with splashes of black paint here and there to add visual interest. The other, Boson, is made of red plastic that is mostly covered with metallic silver paint and reminds me of the Mazda Furai everytime I glance at it.

Anki Drive
An LED indicator communicates the car's play and charge state. Antuan Goodwin/CNET

At the top of each vehicle's canopy is a semi-transparent panel, behind which are LED indicators. When the LED is seen flashing red, green, and blue lights, it's indicating that the car's battery is charging, solid green indicates a full charge, and a pulsing green indicates that the car is ready to be controlled by a player. Pulsing red indicates AI control, so watch out.

There are also clear openings at the front and rear of the vehicle that will come into play with the laser tag-esque aspect of the game, which we'll get back to shortly.

Flip the cars over to reveal the most interesting details of their construction. To start, the front axle is fixed and its hard plastic front wheels don't steer like the front wheels of the car in your driveway. Instead, the Anki Drive cars steer by torque vectoring their rubber-tired the rear wheels, which appear to be driven by a pair of small electric motors. By spinning, for example, the right rear wheel slightly faster than the left, the cars can make left turns and vice versa.

Most of the vehicle's weight, in the form of the rechargeable battery and electronics, appears to be centered over the rear wheels, but a pair of small metal weights in the rear bumper give the Anki Drive cars a decidedly rear-biased weight distribution...sort of like a Porsche 911.

Anki Drive
Anki Drive cars are protected and charged by the included clamshell stations. Antuan Goodwin/CNET

If the rubber rear wheels get dirty, players can clean them with the included tire cleaning pad: a tacky, semi-adhesive pad that pulls dirt and dust off of the rubber when rolled over it. You could accomplish a similar result with a strip of tape, but it's nice to see this attention to detail included in the box. The software is also smart enough to know if the tires have gotten dirty and can alert the player via the app to clean them.

Just ahead of the rear wheels are the copper contacts that receive power from the charging station, which is a black clamshell case for the vehicle with a semi-transparent cover and micro USB port out back. The cars can be stored in their charging stations to prevent damage when unused. Each car takes about 8 to 10 minutes to charge, according the the included literature, and will run for about 20 minutes before needing to juice up again. The included three-headed micro USB charging cable allows three cars to be recharged, simultaneously. However, because the system supports up to four cars per game, four micro USB tips on that cable would have been nice.

Anki Drive
The cars use this track sensor to judge their position on the course. Antuan Goodwin/CNET

Finally, there's the track sensor, which is located between the front wheels on the cars' underbellies. Peering into this square opening, you can see what looks like an LED and a small camera lens. This is how the Anki Drive cars can tell where they are on the track and what to do next. But to figure out how they work, we'll have to take a closer look at the track itself.

The track
The track -- basically an oval course with a slight infield bow on one side -- is printed on a large, vinyl sheet that is unrolled and laid flat on the floor. At 102 inches long by 42 inches wide, it takes up a lot of floor space. However, there's more to the track than just an average vinyl banner.

The Anki Drive system's included instructions make it clear that this track is to be treated with care, not stepped on, folded, or cleaned with chemicals. If you look carefully, it becomes clear why. In addition to being coated with a slightly tackier surface that better helps the cars' tires to grip, the track is also covered with special patterned codes visible via infrared. Look closely and you can just barely make the pattern out, like the grooves on a vinyl record. The cars read these codes as they move along to know where they are and where other cars are on the course and to help them maintain their "lane" without player intervention.

Anki Drive
Look closely and you can see the faint infrared markings, like grooves on a vinyl record. Antuan Goodwin/CNET

The cars can't be used nor the game played without these markings, so take care to keep the track clean and in good condition.

The app and gameplay
The Anki Drive app is required to run the hardware and is available for free in the iOS App Store as of October 23, 2013. We were able to download an early release of the app for testing and to spend time playing against the AI and other local players in our San Francisco office.

The after launching the Anki Drive app your iPhone will automatically seek and pair with Anki Drive cars in the area via Bluetooth Low Energy. Up to four cars can be used at a time and up to four drivers can play together, each with their own device. If left to idle for too long between games, the cars will automatically shut themselves off. Players can reactivate them by tapping small grey buttons on the vehicles' undercarriages.

After selecting a play mode, players will then be asked which of the available vehicles they would like to command. Any cars not operated by a player can be assigned to the Anki Drive AI (artificial intelligence), so you'll have competitors, even if you choose to play solo. AI difficulty can be adjusted between "easy," "medium," and "hard" to match the player's skill level.

Gameplay is basically laser tag on wheels. The object of the game is to race around the track, disabling your opponents' vehicles with "pulse blasts" fired by tapping the paired iPhone. Thanks to the infrared track codes, the cars can steer themselves around the track, leaving the player to control vehicle speed, lane changes, and weapons systems by swiping, tapping, and tilting their iOS device. Meanwhile, the other human players and AI players will be shooting back. The first to a predetermined score (5, 10, or 15 disabled opponents) wins the game.

Anki Drive cars
Vehicles have transmitters and sensors at the front and rear end that work like virtual weapons. Antuan Goodwin/CNET

Anki says that this "Battle" mode and a "Practice" mode where the AI players don't shoot back are the only gameplay types available, but also states that it will add more game types via app updates over time. For example, our app had a placeholder for a "Race" mode that is "Coming soon…"

Each Anki Drive car has its own strengths, weaknesses, and support items. For example, the included Boson and Kourai cars are designed for balanced gameplay and feature tractor beams to pull other players in for the kill, but the red Rho car (sold separately) has attributes skewed toward defensive play including enhanced armor and shields.

At the end of each race, players will gain "points" that can be used to upgrade their car's attributes and add virtual weapons. Players can, for example, upgrade their car's virtual armor, make its weapons more deadly, or upgrade the steering and top speed of the car. Interestingly, upgrades to steering and top speed are reflected in the real world, so it will be fun to see the physical car getting faster thanks to these software unlocks.

Vehicle upgrades are permanent and tied to the physical car for its lifetime and weapon upgrades are tied to your Anki Drive account. New virtual weapons and upgrades will be released over time. Obviously, the cars have physical limits on how fast they can accelerate or corner, so I expect most of these upgrades to be of the "virtual armor and weapons" variety. However, nothing is stopping Anki from releasing more cars that are physically more capable than the current crop -- at an additional cost, of course.

I found the game to be very easy to play, but difficult to master. Even on the easiest difficulty, I ended up losing most of the games that I played during testing to the AI (usually, the heavily armored Rho). The cars really whip around the track at surprisingly high speeds, which made tracking my car versus the AI cars a tricky affair. I was grateful for the cars' ability to stay on track, but I was most impressed with how well the AI was able to negotiate passing maneuvers. I was able to force the occasional collision by weaving in front of an AI car at the last possible moment, but you'd be surprised by how well the AI dodged my erratic weaving back and forth across the track -- slowing its speed, calculating, and then quickly passing.

Small collisions and spins that left the cars on the course were quickly compensated for by the AI. Even if a car ended up pointed the wrong way, the computer could negotiate a lightning quick U-turn to keep the race going. In the event of a major collision that left a vehicle overturned or off-course, the app would notify me to place the car back on track and give it a little push to get it going again.

The vehicles seem to lack any onboard sensors besides the infrared reader pointed down at the track and all of the collision detection happens remotely in the smartphone app. So, while they're remarkably good at dodging other AI and player cars that are linked to the app, they can't tell when non-player obstructions are on the track and will plow happily right into a hand, foot, or housecat on the track, bouncing harmlessly away thanks to their low weight. They're not quite fully autonomous Google cars, but -- for kids' toys --they do a serviceable imitation within the constraints of the game.

I mentioned earlier, we received a third car in addition to the two in the starter kit: the red Rho. Additional cars can be purchased for $69 each, allowing more players (real or AI) to play at a time or giving the player access to unique attributes. I counted five variants, including Kourai and Boson, which are included in the Anki Drive starter kit. The starter cars feature balanced attributes, while Rho and its twin Katal are designed for defense, as stated earlier. There's also a limited edition car called Corax available that sacrifices defense for double the offensive capability. Presumably, there will be more variants and special editions to follow.

Anki Drive cars
Each car type is unique. This Rho, for example, is designed for defensive play. Antuan Goodwin/CNET

Where the old slot car courses were reconfigurable, Anki Drive so far is limited to just the one oval course. While Anki hasn't explicitly stated this, but I'd frankly be surprised if more courses weren't offered at a later date for an additional cost. I'm not sure how much these tracks would cost.

The Anki Drive certainly attracted more than its fair share of attention around the CNET offices; it seemed that everyone wanted to have a go. It's certainly an impressive bit of tech, but most were more interested in learning how it worked than they were in playing with it. However, once they'd figured it out, the novelty of the Anki Drive wore off after a few minutes.

Anki Drive bridges the gap between the advanced, on-screen racing games that I love and play for hours at a time today and the physical, crashable slot cars that I loved as a kid. But in bridging those worlds, it creates one pretty big compromise: a loss of variety. Where a digital racing app can feature dozens of tracks and courses and where my old slot car segments could be almost infinitely reconfigured, Anki Drive has -- so far -- just one track configuration that runs in just one direction. If the Anki Drive system came with more than one track mat, could be run in reverse, or had reconfigurable tiles like my slot car segments, it would have held my attention for longer than it did.

That said, I really enjoyed the few hours of enjoyment that I got out of the physicality of Anki Drive racers, but I probably have a deeper interest in games and toys than is appropriate for someone my age. On the other hand, kids, at whom the Anki Drive is targeted, will probably be more than thrilled to play with the Anki Drive this holiday season.

The Anki Drive starter kit retails for $199 and includes everything you need to get playing head-to-head with a friend or the AI. Additional cars are $69 each, so you're in for a maximum of $337 for the full four-player experience.

Anki Drive

Anki Drive

Score Breakdown

Design 8Features 7Performance 9
Shopping laptop image
Get the best price on everything
Shop your favorite products and we’ll find the best deal with a single click. Designed to make shopping easier.
Add CNET Shopping