Beeku's Big Adventure

You control a character, presumably Beeku, moving left and right across the screen. The main goal is to progress through levels, which involves jumping between platforms and dealing with enemies. You have a basic jump and a shooting ability to clear obstacles. The controls are simple, but the levels introduce hazards and enemy patterns that require timing. It moves at a steady pace, and the difficulty comes from navigating the environment precisely. The experience feels like a compact, focused challenge from that period of browser-based games.