Rainbow Survivor is a free online 3D survival game where you play as a kidnapped student trapped in an amusement park, desperately trying to escape the relentless Blue Monster Impostor. Your main goal is simple but intense: move fast, grab boxes scattered across the map, and use them as cover before the monster catches you or your teammates. Every second counts, and the clock is always ticking.

The game blends Minecraft-style block visuals with fast-paced chase mechanics that keep you on edge. Use the on-screen joystick to navigate the park, pick up crates strategically, and coordinate with other players to complete objectives before time runs out. Hiding behind boxes is not just a mechanic — it is your lifeline. Smart positioning and teamwork separate survivors from victims. The colorful 3D environments and laid-back sound design create a surprisingly fun contrast with the frantic gameplay underneath.

Fans of Minecraft survival games, Roblox-style multiplayer experiences, and monster chase games will feel right at home here. Rainbow Survivor works great as a quick browser game with friends or family, requiring zero downloads and no registration. If you enjoy free 3D action games, hide and seek survival challenges, or impostor-style multiplayer games online, this one delivers solid replayability in short sessions. Jump in, grab a box, and do not get caught.