Mini Vaders

Mini Vaders is a variation on Space Invaders. There are various alien formations moving in unison and much more quickly than in the original. The players has only one life and the base is allowed only a shot at a time. Those kind of games were popularly known as ?Test PCBs?: they were produced with the lowest possible use of resources, with the only purpose to address the setback of a Japanese legislation that required cabinets to have a game in them in order to be sold. Video games without sound, without commercial interest and in some cases, without color or playability that did not even served to test the hardware.