The Practice track and one random track are free so you can try the game. Other tracks are available using In-App purchase. BTS Kart is a fun multi-track go kart racing game for all ages. Imagine the heart-thumping thrill of driving the way you would, if you could. Hog the road. Floor the gas pedal. Pass recklessly. Take curves way too fast. Slam into other karts. Crash with no broken bones. Sound like fun? BTS Kart has 8 complete tracks to choose from. Each track is a little more challenging