Nebulasray/Gameplay

Controls

 * Joystick: Use the 8-way joystick to direct your Fighting Rays around the screen; they are always moving forward, but you can direct them anywhere.
 * Firing Button: Use this button to make your Fighting Ray fire shots at the enemies; you have to press this every time you want to fire a shot at them.
 * Bomb Button: Use this button to make your Fighting Ray launch a bomb at the enemies; if it doesn't have any bombs, this button will have no effect.
 * 1 or 2 Player Buttons: Push these buttons to begin the game as player 1 (red), or player 2 (blue); if only one player was present, it will say the other player score was 7650 (Namco's goroawase number) on game-over, and it will also say that both players' scores were that value in the attract mode.

Fighting Rays
These two ships are the protagonists of the game; Player 1 controls the red one on the left, while Player 2 controls the blue one on the right. Unless they are shielded, they will lose one life whenever they take a hit from an enemy (or anything that is fired at them by one).

Capsules
When one of these is destroyed it shall leave a powerup behind; there are nine different types of powerups and all but one of them have a letter on them to indicate what they do. Three of them can be collected until their letters change to the word "FULL" (but will wear off if you are killed), while four of the others shall cause a counter that starts at 999 but decreases very quickly to appear under your score (and will wear off once it reaches 000, or if you are killed while it is decreasing), the eighth one grants you a bomb (up to a maximum of eight), and the ninth one (which is the only one in the game to not have a letter upon it, but if it did have, it would likely be "P") only seems to be worth extra points.

Capsules are also enemies, and shall attack by firing pink lasers at the Fighting Rays (which will, just like a hit from everything else, kill them on impact); they are also worth 1000 points when destroyed, and the Point powerups are worth 3000 points when collected (indicated by text "3000 Pts." on screen).

Bosses
STAGE 1: Uchu Kukan - Once you have fired off enough shots at the cockpit of the last Enormous Battleship for the stage to destroy it, this enormous ship (which had been attached to the back of it) will take off as the first boss battle of the game begins; the eight bombs upon its bottom section will revolve in a clockwise direction while firing eight spreading pink lasers at you, so it is advisable to aim for these first (and these are all worth 500 points when destroyed). However, if you take too long over destroying these, they shall eventually launch themselves at you - and if you cannot fire enough shots at them to destroy them before they hit you, you will have to move out of their way. Once you have destroyed all eight of the bombs (or they have been launched, off the bottom of the screen), it will start firing blue beams at you from its four side-mounted laser cannons - and you can either aim at them (as they are all worth 1000 points when destroyed) or its now-revealed core (which had been hidden by the bombs at the start of the battle, but if you choose to destroy all four of the cannons, you will have to aim for it anyway) next. Once you have fired enough shots at the core to destroy it, the entire ship will explode, as it falls off the bottom of the screen (however, you will not receive the points for any of the laser cannons you did not destroy) and you will receive 20000 points; the screen shall then fade out, and you will receive 10000 points for every bomb you have, and 30000 points for every Point powerup you collected during the stage. You'll then proceed onward to Stage 2.

STAGE 2: Jungle Heigen - Once you have fired out enough shots at each of the eight last Falcons of the stage, to kill them, you will come to this enormous tank, which will take off as the second boss battle of the game starts; it initially attacks by firing eight spreading pink lasers at you from its (initially-invulnerable) top-mounted red jewel with four more from its two lower-side-mounted cannons, and (because the red jewel is initially invulnerable), you have no choice but to aim for the latter first (and they are both worth 500 points when destroyed). Once you have destroyed both of the cannons it will activate its four centre-mounted missiles which you'll (again) have no choice but to aim for next and are each worth 1000 points when destroyed (but as with Uchu Kukan, if you take too long to destroy them it will eventually launch them at you, and if you cannot fire enough shots at them to destroy them before they hit you, you will have to move out of their way) - and once you have destroyed all four of the missiles (or they have been launched away off the bottom of the screen), it will activate its two upper-side-mounted bomb launchers, which you (once again) have no choice but to aim for next and are worth 2000 points when destroyed (and the bombs they fire can also be blocked, for 400 extra points apiece). Once you have destroyed both of the bomb launchers, you will have to aim for the red jewel (which is now vulnerable); once you have fired off enough shots at it to destroy it, you'll receive 20000 points as the tank explodes (and is left behind by the Fighting Rays).

STAGE 3: Inseki Kukan - Once you have fired enough shots at the last Fortress Ship for this stage, to kill it, you will come to this enormous ship, which will take off while facing you as the third boss battle of the game begins; it attacks by firing pink lasers at you, from its five top- and side-mounted cannons (and blue beams from its bottom-mounted cannon), but the second of the top-mounted cannons is initially invulnerable, so it is advisable to aim for the bottom-mounted cannon first (which is worth 3000 points when destroyed, but it will occasionally retreat back into the ship so that you cannot hit it before reemerging). Once you have destroyed the bottom-mounted cannon, you can either aim for the first and third top-mounted cannons (and the two side-mounted cannons) in turn, or go straight for the (now-vulnerable) second top-mounted cannon (the first and third top-mounted cannons are worth 1000 points, when destroyed, while the side-mounted ones are worth 2000 points, and that second top-mounted one is worth 5000 points) - and, once you've destroyed that second top-mounted cannon (regardless of whether you have destroyed the other ones or not), the entire ship will explode (but you will not receive the points for the cannons that you didn't destroy). This is also the first boss in the game that you will not receive 20000 points for completely destroying, which is an unusual occurrence given that it is tougher than those first and second ones.

STAGE 4: Sabaku Chitai - Once you have fired off enough shots at each of the stage's last eight Falcons to kill them, you shall come to this enormous tank, which is driving away from the Fighting Rays, as its battle begins; it attacks by firing pink lasers at you (from its six side- and two bottom-mounted cannons), so it is advisable to aim for them first (and the six side-mounted cannons are each worth 800 points when destroyed but the two bottom-mounted ones are only worth 600). Once you've destroyed both of the bottom-mounted cannons, you'll have the opportunity to aim for its engines (which are both worth 500 points, when destroyed, and shall slow it down once you have done so) - and once you destroy all eight of those side- (and bottom)-mounted cannons (regardless of whether you destroyed the engines or not), it shall start firing blue beams and eight spreading pink lasers at you from its seven additional centre-mounted cannons (the first of which is initially invulnerable), so you will have no choice but to aim for the six smaller ones next (which are each worth 300 points, when destroyed). Once you've destroyed all six of them, you will again have no choice but to aim for that (now-vulnerable) larger one (which is worth 8000 points when destroyed); once you have fired enough shots at that larger centre-mounted cannon to destroy it, the entire tank will explode (but, as with Inseki Kukan, you'll again not receive 20000 points for doing so) as it gets left behind the Fighting Rays (and, you will also not receive the points for the cannons you did not destroy). The screen will then yet again fade out, and you will yet again receive 10000 bonus points for every bomb you have (the maximum is 60000) and 3000 points for every Point powerup you collected during the stage (the maximum is 45000) - and you will now proceed onwards to the fifth stage.

STAGE 5: Kikai Wakusei - Once you've fired out enough shots at each one of this stage's last three Enormous Cannons to kill them, this enormous ship will fly down into view from the top of the screen and stay ahead of the Fighting Rays as its battle starts; it attacks by firing turquoise and pink beams at you from its four front-mounted cannons (while firing spreading pink lasers at you, from its two side-mounted cannons), and its entire body is its vulnerable spot. Once you've fired enough shots at it, it will explode, then fall to the ground as you receive 5000 points - and the screen will then fade out and you will, for a fifth time, receive 10000 bonus point for every bomb you have (the maximum is 70000), and 3000 points for every Point powerup you collected during the stage (the maximum is 60000). You shall then proceed to the sixth stage; however, even if you manage to clear that stage and see the game's ending sequence, you will still have to clear the Extra Stage before the game is over (much like how Bakutotsu Kijūtei had six extra stages that could only be reached by clearing the first thirty in one coin). Remember that if either of you loses your last life on that area, you will not be able to continue - and, if only one person is playing the game alone, another person shall not be able to join in at that point to help him, and it can also get reflected by the text "INSERT COIN" (or "PUSH 1/2P") not appearing under the inactive player's score.