NAlter formation of aliens     
M  8 29907   0   0
M  8 29908   0   0
Z  8 29909   0   0
NBetter firepower              
M  8 28591   0   0
M  8 28592   0   0
Z  8 28593   0   0
NAll ships now need one hit    
M  8 28793   0   0
M  8 28794   0   0
Z  8 28795   0   0
NOne ship in stead of four     
M  8 30847   0   0
M  8 30848   0   0
Z  8 30849   0   0
NInfinite lives                
M  8 35852   0   0
M  8 35853   0   0
Z  8 35854   0   0
Y