How could some one do that to a Tempest , that is a great game , i remember back in the arcade when i saw 44 credits on the game , i hopped right on it , didn't know why it had so many , took me awhile to find out why and how , from then on i could make the game give me the extra credits , and because of that i could get past level 65 which is invisible level and my favorite levels , i even bought one along time ago and plan on making a mame one , one day