Stage 1[edit]
Welcome to the game. Once your two ships have materialized at the bottom of the screen and the stage's introductory theme starts to be heard from the Yamaha YM-2151, two wormholes will open up in the centre of the screen as six Garapon and six Jammers emerge from them and circle around before taking their places up in the formation; two more wormholes will then open up in the centre of the screen as eight more Jammers emerge from them and circle around, before taking their places in the first formation. Two more wormholes will then open up in the centre of the screen as eight more Jammers emerge from them and circle around before taking their places in the formation - and a seventh wormhole will then open up at the top of the screen as a Bakuto, who will be yielding an armour capsule, emerges from it and takes his place at the top of the formation. All the remaining Cosmo Gangers in the formation (there was a total of twenty-eight of them to begin with) will then begin to attack your ships as the stage's main theme begins to be heard from the Yamaha YM-2151; once you have fired off a shot at the Bakuto to destroy his ship, he will speak out Acho! (アチョッ!) in the Japanese version, or Oh, no! in the US version, and once you have fired a second shot at him to kill him, he will speak out Maitta! (まいった!) in the Japanese version, or I give up! in the US version as the armour capsule he was yielding falls down onto the ship of the player who killed him. Once you have fired a single shot at all the other remaining Cosmo Gangers in the formation to kill them, the text "NICE CLEAR!" will appear on the screen as the "stage clear" theme is heard from the Yamaha YM-2151 and your ships fly up off the top of the screen - and the background will then fade out as the game proceeds to the second stage.
Stage 2[edit]
Once the background has faded back in, your ships have flown back into view from the bottom of the screen and the stage's introductory theme starts to be heard from the Yamaha YM-2151, one wormhole will open up in the centre of the screen as ten Jammers and ten Garapon emerge from it, and circle around while firing a hail of bullets at you, before taking their places in the formation; a second wormhole will then open up in the centre of the screen as ten more Garapon emerge from it and circle around while firing another hail of bullets at you before taking their places in the formation. A third wormhole will then open up in the centre of the screen as twelve more Jammers emerge from it, then circle around (while firing a third hail of bullets at you), before taking their places in the formation - and a fourth wormhole will then open up at the top of the screen as a Bakuto, who'll be holding an armour capsule if the player who won the initial one on the previous stage died (and the other player failed to catch it) emerges from it and takes his place at the top of the formation. All of the remaining Cosmo Gangers in the formation (there was a total of forty-three of them to begin with) will then begin to attack your ships as the stage's main theme starts to be heard from the Yamaha YM-2151; once you've fired out a shot at the Bakuto to destroy his ship, he will speak out Acho! (アチョッ!) in the Japanese version, or Oh, no! in the US version, and once you have fired a second shot at him to kill him, he will speak out Maitta! (まいった!) in the Japanese version, or I give up! in the US version (as the armour capsule he held if the player who won the initial one died and the other player failed to catch it falls onto the ship of the player who killed him). Once you have fired a single shot at all of the other remaining Cosmo Gangers in the formation to kill them, the text "NICE CLEAR!" will appear on the screen as the "stage clear" theme is heard from the Yamaha YM-2151 for a second time, and your ships fly up off the top of the screen - and the background will then fade out for a second time, as the game proceeds onto the third stage.
Stage 3[edit]
Once the background has faded back in, your ships have flown back into view from the bottom of the screen and the stage's introductory theme starts to be heard from the Yamaha YM-2151, two wormholes will open up in the centre of the screen, as fourteen Jammers emerge from them and circle around while firing a hail of bullets at you before thirteen of them take their places in the formation; as the fourteenth one will break away from the formation and fly directly towards you. Once you have fired a shot at him to kill him, two more wormholes will open up in the centre of the screen as ten more Jammers emerge from them and circle around while firing another hail of bullets down at you before nine of them take their places in the formation - as the twenty-fourth one will, again, break away from the formation, and fly directly towards you. Once you have fired a shot at him to kill him, two more wormholes will open up in the centre of the screen, as ten more Jammers emerge from them and circle around while firing a third hail of bullets down at you before nine of them take their places in the formation; the thirty-fourth one will, once again, break away from the formation, and fly directly towards you. Once you've fired a shot at him to kill him, a fourth wormhole will open up at the top of the screen, as six Mini UFOs emerge from it and take their places at the top of the formation and a Bakuto, who will be yielding an armour capsule if either player won one on either of the two previous stages, but died, and the other player failed to catch it flies down into view from the top of the screen - and all the remaining Cosmo Gangers in the formation (there was a total of forty-one to begin with, if you count the fourteenth, twenty-fourth and thirty-fourth Jammers, who decided to break away from it) will begin to attack your ships as the stage's main theme starts to be heard from the Yamaha YM-2151. Once you have fired a shot at the Bakuto to destroy his ship, he will speak out Acho! (アチョッ!) in the Japanese version or Oh, no! in the US version, and once you have fired a second shot at him to kill him, he will speak out Maitta! (まいった!) in the Japanese version, or I give up! in the US version as the armour capsule he was yielding if either player won one upon either of the two previous stages, but died, and the other player failed to catch it, falls onto the ship of the player who killed him) - and once you have fired one shot at all the remaining Jammers and two shots at all the remaining Mini UFOs to kill them the text "NICE CLEAR!" will appear on the screen as the "stage clear" theme is heard from the Yamaha YM-2151 and your ships fly up off the top of the screen. The background will now fade out for a third time as the game proceeds on to the fourth stage; there is now just one more stage to go before the first "Challenging Stage", which is the video equivalent of the original.
Stage 4[edit]
Once the background has faded back in, your ships have flown back into view from the bottom of the screen and the stage's introductory theme starts to be heard from the Yamaha YM-2151, this wormhole will open up in the centre of the screen, as eleven Mini UFOs, eight Garapon, and sixteen Jammers emerge from it and take their places in the formation; there is a total of thirty-five Cosmo Gangers, and they will all then begin to attack your ships as the stage's main theme starts to be heard from the Yamaha YM-2151. Once you have fired a shot at all eight of the Garapon and all sixteen of the Jammers and two shots at all eleven of the Mini UFOs to kill them, the text "NICE CLEAR!" will appear on the screen, as the "stage clear" theme is heard from the Yamaha YM-2151 - and both players' bonus multipliers will then be reset back to 1 as their ships fly up off the top of the screen (you will also notice that if either of them still have an armour capsule that was won on any of the three previous stages, they'll immediately lose it for the first Challenging Stage, in which they will undergo a transformation to look like the lightguns from the original "Cosmo Gang" redemption game from which the stage is inspired).