Althoough it has simple controls,the game is quite addictive as the concept is similar to that of those arcade space shooters except that this has improved visual quality and different elements and medals to provide some challenge.However,there are a few areas that need improvements.There needs to be an ammo meter or some way to hhow the number of bullets.It can be a big problem as players would not count the number of fishes eaten and this can lead to annoying situations like when bomb fishes appear or many enemies appearing at once,only to find out that there is no ammo left.Another problem is that bomber fishes appear anywhere in the screen without any warning,sometimes behind or on the player's character,maybe arrows should be added at the top of the screen to point out where they are going to drop.More types of prey and predators like octopuses could be added to add more variety to the game.Anyway,this one great game to kill some time,so good work.