Very good rendition of the original – Retro Pilot Review

Fun and difficulty level is just about right. The only thing I would change would be to make all the boss ships about 15% larger, and to increase the minimum distance between the enemy and you that is allowed for enemy to fire bullets. I was always killed by bullets fired at extremely short range by enemies here rather than collisions or missiles like in the original.
Review by App Suggester on Retro Pilot.