All I can say is its Free!!!
Free Steam Key at Indiegala JumpBall
Link: Indiegala
ABOUT THIS GAME
These colorful ninjas received a training in JumpBall.
This is the Road Mode.
Run and jump while balancing on the ball.
Dodge the spikes in order to reach the end of each stage.
Each stage you pass the balls will spin faster.
In this game you can play up to 5 players, use gamepad,
adjust the brightness of the background and choose difficulty.
During the gameplay you only need to use 1 button,
just for jump.
See how many points you can do on solo play or with family / friends.
See if you can be a true ninja of JumpBall.
For people that don't have IndieGala account , next steps are required:
1. Be logged into indiegala in your browser
2. Have your Steam account linked to your Indiegala account
3. Make sure that you have joined the Indiegala Steam group
4. Make sure that your Steam profile is set to Public.
How to claim the game:
1. After you are logged in, click on this deal again, and scroll down to the bottom of the page.
2. There should be an overlay with YouTube, Twitter and Facebook icons, proceed to click on the 'X' in the top right-hand corner and click on 'Claim Free Copy'.
3. Complete the reCAPTCHA and click 'Submit'.
4. A message saying 'Enjoy your free gift!' should pop up. Click on 'profile' which is found underneath this message.
5. Then click on the first tab, 'Bundles Library' followed by 'IndieGala Giveaways'.
6. The game should be found at the bottom of the list.