Ultron is another game of the Space Invaders school. Although highly colourful and with a certain variety in that the aliens sometimes move across the screen instead of down, sadly there isn't a lot of originality in it.
There are four stages in the game, each one slightly harder than the previous one. Your laser base moves along the bottom, knocking off the aliens and avoiding the bombs. The third screen has a 3D effect in that the Space Invaders seem to appear out of the distance in ones and twos, and the fourth has one huge alien with a smaller alien inside. You have to chip your way through the thick outer skin to get at the points inside. If you manage to do this, you are given an opportunity to earn a bonus.
While the average arcade game fan has long since left this sort of thing behind, I feel that Ultron may appeal to the younger user. Certainly the keys are easily manageable and the screen layouts simple, with explicit instructions on an accompanying leaflet.