Navigate a radioactive ball through a fast-paced 3D tunnel using accelerometer controls. Collect power-ups, perform combos, and avoid obstacles to achieve the highest score. Compete with others via Game Center achievements and leaderboards.






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Looking for something like Jr's Gem Run? We've analyzed 10+ similar apps and games to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.






Navigate a radioactive ball through a fast-paced 3D tunnel using accelerometer controls. Collect power-ups, perform combos, and avoid obstacles to achieve the highest score. Compete with others via Game Center achievements and leaderboards.






Navigate a neon starship gauntlet in this one-tap arcade runner. Dodge lasers, falling debris, and closing gates while collecting energy cells. Unlock new ships and compete on leaderboards for the ultimate high-speed challenge.





Embark on a classic pixel art platforming adventure to rescue a child and potentially win a heart. Jump on enemies to defeat them and conquer challenging boss fights across multiple worlds. The first two worlds are free, with an option to unlock the full game.