Download of NinJump 3.1.1 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally designed by Backflip Studios. The software is included in Games. We recommend checking the downloaded files with any free antivirus.
From the developer:
NinJump is a fast-paced ninja running game. Your goal is to climb as high as you can while avoiding evil squirrels, dive-bombing birds, enemy ninjas, throwing stars, exploding bombs and more. You effortlessly scale the side of buildings with ninja agility. You tap to jump from one wall to the other, slashing enemies in your way. You can hit three matching enemies in a row for a bonus power-up boost. You can grab shields for protection.
You may want to check out more Mac applications, such as NinJump Deluxe, which might be similar to NinJump.