Shoot the green rings to fill them and activate the platform. The game is difficult. Simple and addictive gameplay. Circle Down, platformer game, HTML5 game, hypercasual game, puzzle game, addictive game, challenging game, casual game, single player, bounce, timing, reflexes, ring shooter, level completion, mobile game, online game, 1 player game, easy to play, difficult to master, skill-based, arcade game