Thanks for the offering, so I could try this space invader like. I didn't see much in fact because I died very fast and you have no life reserve. There's some random in waves chains so despite I died fast I could see various waves, that seems a fairly good waves design.
But well one life involving for me very short sessions, not my cup of tea particularly when I'm expecting a space invader like with a campaign approach instead of a record approach. I suppose I'll never see one, instead it will be an horizontal shooter.