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🚀 Blast off on a thrilling adventure with Step Upper, the addictive endless space runner! 🌌 Inspired by astronauts, climb higher and higher towards the universe, earning points with every leap. Compete with friends for the highest score – share your best run as a screenshot and become the leader! Enjoy auto night mode and a fun, fast-paced experience. Challenge your friends to see who can reach the highest altitude in this captivating 3D game. Easy controls for keyboard, mouse or touch screen. Download Step Upper now and start your journey to the stars! ✨ #Hypercasual #SpaceRunner #HighScore #MobileGame Step Upper, space runner, endless runner, high score, 3D game, arcade game, mobile game, casual game, fun game, space, astronaut, competition, leaderboard, share score, HTML5, H5, hypercasual, running game, space game, challenge friends, leaderboard, space adventure, score, fastest, HTML, HTML5