Idle Speed Race is a free-to-play racing game developed by Sunday.gg for Android devices. The game offers a unique twist to traditional racing games by allowing players to increase their speed even when they are not actively playing the game.

The game features various vehicles for players to race with, including cars, trucks, and motorcycles. As players race and collect coins, they can use them to upgrade their vehicles and unlock new ones. The graphics are colorful and detailed, and the sound effects add to the overall immersive experience.

Overall, Idle Speed Race is a fun and addictive game that offers a unique gameplay mechanic that sets it apart from other racing games. It's perfect for casual gamers who want to enjoy a quick racing fix on their mobile devices.