It is not the game's fault! It is the system that closes the app when running out of memory. If your device has less memory, it may run sometimes but probably it will crash. It is recommended having 4 GB if possible, to play with better quality textures and many advanced options (with optimized settings it runs well on most popular devices). This game is designed for smartphones or tablets with a great RAM capacity. THIS GAME DOES NOT WORK ON DEVICES WITH LOW RAM CAPACITY! * Avoid settings that requires lots of memory, as traffic repaints and extra content. * Change graphics settings to a lower profile. * Reduce or disable traffic cars, pedestrians and buses (set passengers to 20%). But it will NEVER show banner ads inside the gaming screen, while you drive! Notice: the game may show some ad to support development on loading screen (you already has to wait the loading process anyway.). Touch below the camera icon to hide all the controls! You may experience an immersive 100% screen for the game! Without boring ads on the game screen! As soon as the main features are completed, the game will start receiving updated content like new maps and buses! This game is in development! It will be constantly updated with more features, buses, lines and maps! This is a playable beta to demonstrate its concept.