Zucko Invaders
Fifty-five of them, and the speed-up that was originally a bug.
NOTES Left/Right to move, Z or Space to fire. One shot on screen at a time.
About
added 2 months agoEleven by five, in the three sprite types worth 30, 20 and 10. One shot on screen at a time, so every trigger pull is a decision rather than a stream.
The formation speeds up as you thin it, and that is reproduced by the mechanism rather than by a timer: one invader is moved per tick, exactly as the 1978 hardware did it, so a full formation takes 55 ticks to shuffle and a lone survivor takes one. The famous difficulty curve comes out of that for free, including the way it lurches as a row empties.
The mystery ship crosses the top on a timer. Its value was never random in the original, it was a lookup on your shot count, and the 300 landed on the 23rd shot and every 15th after. Players counted. You can too.
Three bomb types, four bases that erode from your own fire as well as theirs, and waves that start lower each time.
Written for this site by PunkyBruiser. If something is broken, say so below.