When out in my local town some time in 1978 I spotted another updated version of the Binatone TV Master MK IV with 6 games, two extra than the last one and it came with a “light” gun, I don’t know what the price was at the time but I had to have it.
I had lots of fun with this new one shooting at the screen to blow shit up, well a dot would move across the screen and would disappear if you shot it, the other four game were practically the same as the previous version so I mostly played the shooting games but this got old very quickly as the light gun wasn’t very good as it turned out if I stood so far from the TV I could shoot all the dots without aiming.
I ended up taking the gun apart see how it worked and in the process I broke it.