G:Starforce  

C:Infinite Lives|SZKEVTVG|Galoob| 
C:Start With 1 Life|AEUAUIZA|Galoob| 
C:Start With 6 Lives|IEUAUIZA|Galoob| 
C:Start With 9 Lives|AEUAUIZE|Galoob| 
C:Turbo Speed|VYVEGONN|Galoob| 
C:No Enemies After The First Stage!|EYVEGONN|Tony Hedstrom|Plus, you fly over completely different scenery.  To change the scenery, just pause and unpause the game. 
C:Can Change Scenery Color By Pausing Game|KYVEGONN|Tony Hedstrom| 
C:Very Fast, And Scenery Looks Different|VYVEGONY|Tony Hedstrom|