Does anyone remember an arcade game?
It was for one or two players and they where some sort of aircraft. There were four powerups, which respectively appeared in a "1" to "4". Picking two, for example, would make the aircraft shoot flames while 3 or 4 would give a diagonal-firing laser.
It is not much, however it is one of the games I used to play as very young and would like to find it again.
My regards.