This is Bubble Trouble by Jump Disk / Tony Phillippson
In the same sort of style as Pang! from the Arcades, You are the little boy at the bottom of the screen, and you need to shoot bubbles without getting hit by them, which will cost you a life
You fire your harpoon upwards, and if it touches a Bubble it then splits that bubble into 2 smaller bubbles, and so on, until the smallest bubble you hit will vanish
There are your 3 lives shown at the bottom left, and bottom right shows the Level number you are on, Sadly there is no High Score table, or indeed an in-game Score, which is a little disappointing, as you could have worked towards a High Score at least
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Code: Tony Phillippson / Jump Disk
Visits: 124