The Real Ghostbusters/Stage 1

Welcome to the game. Once all three Ghostbusters (or just the two hunters who later became Venkman and Stantz in the old Japanese version Meikyuu Hunter G) have appeared on the screen, four ghosts will appear and start flying around them; once you have beamed them all up for 1000 points apiece, two Type 1 enemies will come flying up towards you from the bottom of the screen, while sticking their tongues out at you. Once you have fired a shot at both of them to kill them, for 500 points apiece, they'll leave two more ghosts behind - and once you have beamed both of them up, you will have to start walking up as two Type 2 enemies come walking towards you while spitting projectiles at you. Once you have fired a shot at both of them to kill them for 100 points apiece, they will leave two more ghosts behind; once you've beamed both of these up, you'll have to fire a shot at a tripod camera, to destroy it. Once you've done so, it will leave a Beam Energy Up powerup behind - and, once you have collected it, three Type 3 enemies will come flying down towards you from the top of the screen, while spitting projectiles at you. Once you have fired a shot at each of these to kill them, for 1000 points apiece, they'll leave three more ghosts behind; once you beam them all up, two Type 4 enemies shall come walking towards you. Once you have fired a shot at both of these to kill them, for 200 points apiece, they'll leave two more ghosts behind (one of which has an Aura Power powerup inside) - and once you have beamed both of them up, a protective barrier will appear around your Ghostbuster for a short period of time. You will then have to walk back down and to the right, over one of seven angry-looking spikes (or wait until it's receded back into the ground, if you're not the player who beamed up the Aura Power ghost), to collect another Beam Energy Up powerup; once you have done so you will have to walk up over a second of the seven angry-looking spikes (or wait until it's receded back into the ground if you are again not the player who beamed up the Aura Power ghost) and fire a shot at a second tripod camera to destroy it. Once you've done so it shall leave a third Beam Energy Up powerup behind - and once you've collected it, you will have to continue walking up, as four more Type 3 enemies fly down towards you from the top of the screen while spitting projectiles at you. Once you've fired a shot at each of them to kill them they shall leave four more ghosts behind; once you've beamed them all up, you will have to walk to the right and fire a shot at a third tripod camera to destroy it. Once you've done so, it'll leave a fourth Beam Energy Up powerup behind - and, once you have collected it, you'll have to walk up, as four Type 5 enemies come walking down towards you from the top of the screen while laying bombs (which explode into four spreading projectiles after a few seconds). Once you've fired enough shots at each of them to kill them, for 500 points apiece, they will leave four more ghosts behind; once you have beamed them all up, you will have to walk up (while one of eight more angry-looking spikes is in the ground) to collect a Shot Power Up powerup. Once you have done so you will have to walk to the left (while a second of the eight additional angry-looking spikes is in the ground), up and to the left as you come up to a Type 6 enemy who's firing lightning bolts in eight directions at you - and once you fire enough shots at him to kill him, for 500 points, he'll leave a twenty-second ghost behind. Once you've beamed him up, you must fire a shot at a fourth tripod camera to destroy it; once you've done so, it shall leave a fifth Beam Energy Up powerup behind. Once you have collected it, you shall come to another Type 6 enemy who's firing lightning bolts in eight directions at you - and once you have fired enough shots at him to kill him he will leave a twenty-third ghost behind. Once you've beamed him up, you will have to walk up, as you come to a third Type 6 enemy and two Type 7 enemies who are firing lightning bolts in eight directions and shooting flames at you; once you've fired out enough shots at all of these to kill them (the Type 7 enemies are worth 300 points apiece), they'll leave three more ghosts behind. Once you have beamed them all up, four more Type 3 enemies will come flying down towards you from the top of the screen while spitting projectiles at you (as you come to a third Type 7 enemy who's shooting flames at you) - and once you've fired a single shot at each of the Type 3 enemies and enough shots at the Type 7 one to kill them they'll leave four more ghosts behind (one of which again has an Aura Power powerup inside). Once you have beamed them all up, another protective barrier will appear around your Ghostbuster for a short period of time; you then have to walk to the left over one of eleven more angry-looking spikes (or wait until it recedes into the ground, if you are once again not the player who had beamed up the second Aura Power ghost), up and to the left as two more Type 1 enemies fly up to you from the bottom of the screen while sticking their tongues out at you. Once you have fired a shot at both of these, to kill them, they will leave two more ghosts behind - and once you have beamed both of them up, you will have to walk to the right and fire a shot at a fifth tripod camera to destroy it. Once you have done so, it will leave a sixth Beam Power Up powerup behind; once you have collected it, you will have to walk up as you come to two Type 1 boss enemies (and the game's "boss" theme, which was the main stage theme for MHG, starts to be heard from the Yamaha YM-2203 & YM-3812).

Both Type 1 boss enemies will attack by hovering around in front of the Ghostbusters while throwing six spreading tissues at them - and once you've fired enough shots at both of them to kill them for 40000 points apiece (they'll change colour from gray to brown when they're close to defeat!), a key shall appear in front of the double doors. However, before you collect it, you shall have to walk to the left and up, then fire a shot at the first of two oil drums to destroy it; once you've done so, it will leave a seventh Beam Energy Up powerup behind. Once you have collected it, you will have to walk back down and to the right to collect the key, then walk up to the double doors to make them open up - and once all three Ghostbusters have walked through the double doors the text "STAGE CLEARED!!" will appear on the screen as the "stage clear" jingle is heard from the Yamaha YM-2203 and YM-3812. The "Ghost Storage" theme (which was originally the "boss" theme in Meikyuu Hunter G) will now start to get heard from the Yamaha YM-2203 and YM-3812, as all three Ghostbusters deposit their beamed-up ghosts into it; once they have done so, they will proceed to the second stage.

Note: In Meikyuu Hunter G, the ghosts and "Ghost Storage" are not present because it was not originally a Ghostbusters game, and those randomly-generated different powerups are only left behind when a small gray or cyan ghost, left behind by certain enemies when they are killed, is killed itself.