Summer Rider 3D is an obstacle-course surfing game where players navigate rushing rapids, avoid obstacles, and collect starfish. You can play it instantly and for free at kbhgames.com right in your browser, so it’s quick to jump in anytime. Players control a surfboard or jet ski, steering through sharp turns and sudden hazards while keeping their run going as speed steadily increases. Starfish collected along the way can be used to unlock one of 10 surfboards or 2 jet skis, giving each run a fresh look. The game includes both a single-player option and a two-player mode for head-to-head runs on the same screen. Controls are straightforward—use the arrow keys or WASD to steer and jump, or tap the left/right sides of the screen on mobile. Some rocks have special five-starfish bonuses, but grabbing them requires precise timing. The more distance you cover, the faster the pace becomes, so staying focused is key. Summer Rider 3D also features a global leaderboard where players enter their name and see how they rank against others worldwide. Between its bright tropical visuals, energetic soundtrack, and escalating challenge, it delivers a quick, competitive way to test your reflexes.