A colorful and well playable vertical scrolling shoot'em up game. Technically a few steps below the arcade version but still a well done conversion. Gameplay reminds a bit of Xevious with switching between shooting airborne enemies and bombing ground targets, but TwinBee looks and sounds better and is more varied. Power ups are gained by finding and collecting bells in clouds after shooting them until they change to a certain desired color. The five implemented stages are rather short. Only the last two levels are relatively difficult. Beginners will like the easy first half of the game.