Stair Challenge is a free racing game developed by PxS for Android devices. The game offers a unique and exciting experience to its players with its challenging gameplay and addictive nature.

In Stair Challenge, you have to race to the top of a building by climbing stairs. You must navigate through the obstacles, avoid falling or colliding with other racers, and reach the top as fast as you can. The game features different levels, each with its own set of challenges and difficulty levels. You can also customize your character's appearance and upgrade your abilities to improve your performance.

Overall, Stair Challenge is a fun and engaging game that will keep you entertained for hours. Its simple controls and colorful graphics make it easy to pick up and play, while its challenging gameplay and addictive nature will keep you coming back for more.