Subway Surfers is a popular mobile game with several key features that contribute to its widespread appeal and success:

1. Endless Runner Gameplay: Players run endlessly along subway tracks, avoiding obstacles and collecting coins to achieve high scores.

2. Colorful Graphics: The game features vibrant and engaging graphics with detailed environments that change as players progress through different locations.

3. Power-Ups: Various power-ups can be collected during gameplay, such as Jetpacks, Super Sneakers, Coin Magnets, and Multipliers, which help players achieve higher scores and progress further.

4. Character Selection: Players can choose from a diverse set of characters, each with their own unique abilities and attributes, adding variety to the gameplay experience.

5. Hoverboards: Hoverboards can be used to protect players from crashing for a limited time, adding an extra layer of strategy and fun to the game.