Biotek

Biotek is a top-down arcade shooter set in a biological laboratory. You are making pro-biotic drinks using good bacteria known as "Super X". The lab contains a variety of bacterial colonies, some of which are neutral while others are deadly. You can convert the bacteria by spraying them with a short-ranged ray beam that you carry. Purple colonies are harmless and require one spray to be turned into Super X (White) but if sprayed again turn blue and become dangerous. Blue bacteria become purple when sprayed. Red creatures become stationary and will eventually divide by binary fission, but may be sprayed to become white. The level ends when you have converted all of the bacterial colonies into Super X, and added them to the drink bottle on the right of the screen. The levels become progressively more difficult with extra and faster moving bacteria.