I was wondering if anyone remembers a game where the objective was to secure a building from an experiment gone wrong. You start off on a building and have to secure the room by shooting a laser that kills “balloon” like creatures that try to attach you. Securing the room requires covering the portal from which they came. The red ones jump back and forth, while other colors are more aggressive in their attack. Along the way you collect upgrades like lasers and bombs which help you advance the game. Does this game sound familiar?