This is also known as Vulcan Venture, and is the third Gradius game that was also released for arcades, preceeded by Gradius/Nemesis and Salamander/Life Force.
webrender.rb:2513:output_full_game(DB, @1912, options: {})ocdgamer.rb:902:output_entries_filtered( @1912, headline:Passwords / Cheat Codes, [filter], show_dates:false) ocdgamer.rb:902:output_entries_filtered( @1912, headline:Facts, [filter], show_dates:false) ocdgamer.rb:902:output_entries_filtered( @1912, headline:Analysis, [filter], show_dates:false) ocdgamer.rb:902:output_entries_filtered( @1912, headline:Quotes, [filter], show_dates:false) ocdgamer.rb:902:output_entries_filtered( @1912, headline:Technical Notes, [filter], show_dates:false) ocdgamer.rb:902:output_entries_filtered( @1912, headline:, [filter], show_dates:true) ocdgamer.rb:902:output_entries_filtered( @1912, headline:Log entries, [filter], show_dates:true)