checked-no =>Stage Select: On the title screen, press <B> R <A> D R U <B> L <A> U R <A>. =>Play 2600 Pitfall: On the title screen, press D <A>x26. =>View Credits: On the title screen, press (<C> R D)x3. =>Hyper Speed: On the title screen, press <B> <A> R <C> R U D. =>Unlimited Continues: On the title screen, press <C>x4 L <A> D U D. =>9 Lives: On the title screen, press R <A> D <B> R <A> <B> U D. =>Practice Level Game: On the title screen, press <B> <A> D <C> R <A> <B>. =>Start with All Weapons: On the title screen press <A> <B> U <C> <A> <C> <A> to begin the game with all of the weapons. =>Extra Power: Press L <A> D <B> R <A> <B> U D <A> <B> U <C> <A> <C> <A> on the title screen to begin the game with extra lives and weapons.