Design

Narrative Structure

In close future mankind has developed the sufficient technology to conquer space. Even tough humans have developed such advanced pieces of technology the future of mankind is in great danger, as the Earth has been attacked by a mysterious alien force. To finally end this war, humans develop the two most advanced spaceships with the most powerful weapons ever created in a hope to repel the alien threat forever.

Level Analysis

In all levels the player encounters score bonuses and power-ups. The ship losses a life if it touches an enemy projectile, enemy ship or the level walls. Every level have a mix of the 22 first shown on the Game Analysis section, and some new enemies added on each stage. Most of the enemies are from this first. Level 3, Alien, is an exception. It has a special set of enemies with organic like shapes. All enemies are shown on the table.Each level counts with 20 to 25 different types of enemies counting the sub-boss and boss.

The game consists of 7 levels:

1. The moon:

The space ships travel through the moon surface, entering one of its craters and going out to fight the boss. The moon is an easy level that helps getting used to the controls and the game mechanics. Enemies projectile and ship movement requires that the player moves continuously in the screen without hitting anything. Enemy ships appear from different positions, encouraging to test all different laser types. The movement of the screen is almost straight helping the player to get use to stay inside the levels boundaries.

Collision Layout of stage 1.

2. Mechanized unit:

The inside of a machine like scenario. The ship encounters waves of enemy ships and turrets. The camera goes down in an elevator and then faces an enemy sub-boss machine. Continuing until finding the boss. Mechanized unit is a level with an intermediate difficulty, there are more enemies and requires the player to focus and understand the uses of laser types to continue with ease. The level walls start changing, the ship must move to dodge pillars without hitting the level walls.

Collision Layout of stage 2.

3. Alien:

Straight moving level with organic like scenario with parasite enemies and boss. Alien level has a high difficulty. The player must move inside a narrow space, with level walls that change sizes avoiding touching them. Enemies are totally new with unexpected movement and firing patterns.

Collision Layout of stage 3.

4. Caven:

Cavern scenario with regular enemy ships. Flying through the cave, Fighting a big sub-boss enemy ship, until arriving to a train like boss. Caven level has and intermediate level difficulty, with some new enemy ships and new moving patterns for known enemies. Movement is limited by cavern boundaries and rocky spikes.

Collision Layout of stage 4.

5. Meteorite

Space scenario with asteroids. Meteorite level has an intermediate difficulty. At this level the player encounters a few new enemies. Ship movement is limited by moving asteroids which the player needs to shoot or dodge.

Collision Layout of stage 5 (1).

Collision Layout of stage 5 (2).

6. Secret Base

The ship infiltrates a secret base through a rocky cavern, reaching the base and its boss. Secret base has a high difficulty. Most enemies are known with a new few exceptions that require the player to stay alert. Enemy waves are numerous needing a high skilled pilot. The ships movement is limited by the rocks of the cavern until reaching the secret base where its easier to maneuver.

Collision Layout of stage 6.

7. Core

Last level, the ship arrives at the enemy base an infiltrates to its center destroying the base core. Later the player evacuates the base and encounters the final boss. Core level has a high difficulty level, that requires the player to have knowledge of enemies, movements and laser types to make his way through waves of enemies, dodging obstacles and projectiles. The movement is really limited and the camera moves around in different directions. Its a long level with difficult sub-boss and boss. This level requires skills and precision.

Collision Layout of stage 7.

Collision Layout of the final boss.

Gameplay

Movement

The camera (game's screen) moves through the map pushing the player with it, horizontally to the right most of the time. Inside the camera area the player has free movement in all directions, except, of course, for the areas occupied by obstacles, enemies, or enemy attacks, which would result in death.

Shooting

The ship has 4 different powers and a different variant of 3 of them (yellow power doesn't change) in each of the 4 power sets known as "types". Powers can level up to be stronger. Each type has an special attack known as "Weapon" that can be charged and shot, wasting 1 blue power level on activation (if possible). Dying decreases all power levels by 1, but with a minimum level of 0 for all powers, except for blue which is 1.

Powers

Blue (Max level: 7): Main weapon type, always available and will fire every time you press the fire button and is the player's main offensive tool. All shots from this power start their trajectory from the player ship's cabin (front).

Orange (Max level: 5): Secondary weapon type, mainly used to damage enemies above and/or below the player's ship (diagonally too). It's not a shot per button press, so it has less fire rate than the blue power. All shots from this power start their trajectory from the player ship's center.

Yellow (Max level: 8): Automated seeking missiles, it fires missiles that automatically track enemies, there can only be 3 on the air at the same time. All shots from this power start their trajectory from the player ship's center.

Level Up: Missiles deal more damage. This upgrade appears at level 3 and 5.

Green (Max level: 8): Shields positions and movements, they follow the player's ship (with a slight delay) and stop incoming damage.

Level Up: Each level grants 5 damage points to resist before a level is lost. Damage points can be projectiles and enemies (on contact), and their damage equivalent would be the life points they have left. This upgrade appears on all levels, but the shields start as color red, change to green at level 2, to yellow at level 4, and back to green at level 6.

When gaining the first level, the shields will appear and do a large spin animation around the player's ship before getting into their positions depending on the current type equipped.

Type-1

Blue (Normal): Blue bullets that move horizontally to the right.

Level Up: Adds more bullets or more damage per bullet (bigger bullet), both increase the effect area.

Orange (Fintael): Missiles stay close above or below the player's ship for a brief moment, then launch to the right making a diagonal trajectory downwards or upwards.

Level Up: Adds more missiles. One moving diagonally down at level 1, one added moving up at level 2, and 1 added both above and below at level 4.

Green (Rolling): The shields circle around the player, each at the opposite side of the other.

Special Attack Weapon: Two blue balls move vertically from the current position of the player's ship, one upwards and the other downwards, each shooting a giant blue bullet, that moves horizontally to the right, 3 times before stopping and disappearing. The giant bullets damage enemies on impact, and a total of 6 balls appear (3 firing cycles with a short time interval between them).

Type-2

Blue (Reverse): Orange bullets that are shot on a straight line both to the rear (left) of the ship and the front (right).

Level Up: Adds more bullets or more damage per bullet (bigger bullet), added new paths to the rear (left) with enough level.

Orange (Hawk): Bombs that move in a straight line above or below the player's ship, vertically or diagonally to the right.

Level Up: Adds more bombs. One moving vertically down at level 1, one added moving up at level 2, and 1 added both above and below at level 4 moving diagonally forwards (to the right).

Green (Side): The shields defend the top and bottom of the player's ship in a vertical formation.

Special Attack Weapon: A barrage of bullets that fire to two different directions: to the rear (left) of the player covering a cone-shaped area and to the front (right) following two diagonal straight lines, damaging all enemies that the bullets hit.

Type-3

Blue (Laser): Green short laser beams that move on a straight line, but which direction and amount changes depending on the level.

Level Up: Adds more beams or more damage per beam (bigger/thicker beam), some levels add or change firing paths. The level 1 beam does 2 damage points, but is reduced to 1 per beam at level 2 (until it increases with more levels).

Orange (Normal): Bombs that move up or down from the player's ship with a curved trajectory.

Level Up: Adds more bombs. One moving down forwards (right) at level 1, one added moving up forwards at level 2, and 1 added both above and below moving backwards (left) at level 4.

Green (Front): The shields defend the front (right) of the player's ship in a vertical formation.

Special Attack Weapon: Three green straight-lined thunderbolts that spin within a radius around the player, damaging any enemy they touch.

Type-4

Blue (Way): White bullets that move to the right within a cone shape.

Level Up: Adds more bullets or more damage per bullet (curved bullet), both increase the effect area.

Orange (Laser): Green short laser beams that move on a straight line upwards or diagonally to the rear (left) from the player's ship.

Level Up: Adds more lasers. Two, one moving vertically up and the other down at level 1, two more added moving diagonally backwards at level 2.

Green (Rear): The shields defend the back (left) of the player's ship in a vertical formation.

Special Attack Weapon: Two consecutive bursts of short explosions that start on the player's ship and continue to the front (right), damaging all enemies on hit in a cone-shaped area.

Enemies

In the following grid there's information about each enemy. In order to see what the score that each enemy awards the player, there is a bar at the end of the grid, with which you can scroll through all the different columns.

Image	Groups	Action or Movement	Fire	Sprite movement	Observation	Health Points	Points
	Groups of 4	Move up and down in wave like motion	Blue spheres	Sprites spins	---	1	100
	Alone	Moves left, then diagonal up, diagonal down, and reaches the middle of the screen, returns to original position. This cycle happens 3 times, then it moves in a straight line to the left	---	down, up, and then back	When killed leaves power-up. Different colors	1	100
	Groups in different formations	Straight forward	BLue Spheres	Sprites tilting airplane	---	1	150
	Alone	Spams 4 green flies	None	Sprite open and close	---	4	450
	Group of 4	Moves straight forward, at the end of the screen they turn back	Blue Spheres	Turning back	The last one moves first and so on	2	150
	Alone	Open to fire	4 yellow sphere projectiles, up and sideways	Open and closes	---	5	400
	Groups of 4	Moves forward	Blue spheres	Spins	---	2	200
	Groups of 4	Up, down with a loop move and then forward	Blue Spheres	Spins	---	1	100
	Alone	Slow movement toward the player	1 blue ball, the fire goes in the direction of the player	Fire on the motor turns off and on	---	5	150
	Alone	Moves in the ground	3 red spheres	Top turret spins	---	7	400
	Groups of 2 or 3 ships, perfectly aligned	forward, launches missiles and then turns back	First missile then fires second one	Sprites turns back	Ships moves on different directions	2	250
	Groups of 5	Move forward and turn back	Blue spheres	---	---	2	100
	Alone	Wiggles ups, then spits 3 balls, wiggles down	Fires 3 balls, one up and two sideways	Moves up and wiggle	Projectiles are different and spins	15	500
	Group of 3	Moves a bit up and down	Blue Spheres	Tilts	---	2	100
	---	Aims at you	fire ---	Aiming	---	2	200
	Alone	No	Fires single laser	No	---	10	800
	Group #	Wave like motion	---	---	---	2	200
	Alone	Straight line movement in different directions	Single green laser	Open and closes hatch	Spawns 6 enemy flying drones	55	2000
	Group of 6	Circular motion around mother ship	---	Tilts	---	4	100
	Alone	Rides on the ground	Fires multiple red dots up, they fall down	Cannon on back moves	---	15	1200
	Alone	Up and down	Green laser	Extendable arm up and down	Height of turret follows player position	4	300
	Alone	---	Blue circles in “x” shape	Engine spins	---	10	250
	Alone	Circular moving pattern and then opens the 4 shields	The core start shooting blue spheres while spinning resulting in an in spiral shape fire pattern	Core spins, outer ring spins and opens in 4 parts	Core needs to be hit to damage	115	20000
	Alone	Forward	---	Tilts and Turn Back	Come from the background	4	400
	Alone	Fire and Follow the player walking on ground	Blue spheres	Walking and aiming	Walking follows the player	10	250
	Alone	Energy beam blocker ??	---	Going up	--	12	350
	No	Fire and aim	Yellow Spheres	Appearing and disappearing	---	4	0
	Alone	Back and forward	Blue spheres	Gears turns	---	115	15000
	Alone	Spawns enemy	No	No	---	5	200
	---	---	----	----	---	1	0
	Alone	Up and down, pillar movement,	2 Laser	Shakes, gears spinning, up and down movement	Damages applies to main turret	115	40000
	Groups	Forward in a wave like motion	No	No	---	1	100
	Alone	Forward movement	Yellow spheres	Tail and head movement	---	5	250
	Alone	Stays in position	3 fire spheres	Wiggles and open mouth to fire	---	15	500
	Groups	Straight line forward	No	Opening and moving blades	Appearing in waves	13	200
	Alone	Move up and stays in position	No	Tremble	---	1	200
	Alone	Straight forward	Red spheres	Head and tail Wiggles	First movement slow, then it goes fast	5	150
	Alone	Slow movement. Wave like movement up and down	No	Turning around	---	48	1000
	Alone	Jumping movement through the screen	No	Wiggle	Comes in waves	5	150
	Alone	Forward in wave like movement	Extends tongue	Wings, head and tongue out	Stops near player to extend tongue	12	100
	Alone	Moves diagonally	No	Tail and Mouth	comes in waves	8	200
	Alone	Forward to middle screen and the goes back	Groups of 3 red spheres 3, 3 shots	Yes???	Comes in Waves	11	400
	Alone	Short movement to player	8 Yellow spheres, circular shot	Opening fire hatch	Comes in waves	10	320
	Groups	Shots	Fire 1 Yellow laser	Opens Hatch	---	12	100
	Groups	Straight line and Circular Motion	No	Changing direction	--	2	200
	Alone	Fall from above, charge at you	No	Wiggle	Comes in Waves	10	200
	Groups	Swimming motion up	No	Legs move like swimming	Comes in Waves	2	100
	Alone	Mostly static, Arms stretch, up and down	Yellow Spheres with gravity	Eyes closes, Heart beat, Head opens	First Head must be shot to damage, arms aims at players ship. Head opens and start shooting projectiles	230	30000
	Circular Motion	Blue lasers	Open and closes	---	---	15	600
	Alone	Up and Down, forward	Green laser and blue spheres	Opens hatch, and gears	hit to damage the different parts that may fall of	115	10000
	Alone	Jumps from water	No	Turning down	---	4	100
	Alone	Firing missiles	targeting Missiles	loading missiles	---	15	850
	Alone	Comes from back of the screen, opens arms to fire	Multiple blue spheres in wave movement	open and coses arms and fire	---	26	800
	Groups	Floats and Charges to player	No	Spinning gears	---	5	100
	Alone	Forward and Backwards	Fire launcher, lasers	Wheels, aiming turret and opening hatch, laser thrower	throws enemy drones and fire at enemy ship, hatch turret and ship suffer damage. after destruction, must target Laser launcher	230	40000
	Alone	Target player	No	no		3	150
	Alone	Moves up and down following player	Green laser	---	---	5	200
	Alone	Spins	No	---	---	14	250
	Alone	Charge at player position	Yellow spheres	---	---	3	250
	Alone	Spins and move forward	3 Blue dots	spins	---	22	100
	Alone	Up and down following player	2 blue rays	open and closes	sub boss	115	20000
	Alone	Yellow laser	up and down	---	---	60	1000
	Yes	spins toward player	no	spins	---	9	150
	yes	charges at player	no	spins	---	2	50
	spins	spins around green ship	yellow laser	spins	---	15	200
	Alone	---	Up and down following player	---	---	115	2000
	Yes	Shots straight laser at enemy position	Laser	Spins	---	8	150
	Alone	Open and closes	Shot energy circles and ships	Open and closes	Must hit the center eye while open to deal damage	115	40000
	Alone	Moves around the screen	blue lasers	Open an closes	Drones come out of the boss. Must hit upper part or down part to damage	345	70000
	Alone	Open and closes and laser moves	Yellow spheres	Open and closes	Must hit orb to damage	115	30000
	Alone	Fires, and charges at player	Shot multiple type of lasers	Blue spheres and lasers	Up and down and turret movement	230	200000

Items

All move around the screen in a diagonal pattern and bounce on the screen edges, 25 seconds after spawning they go through them.

Image	Effect	Sprite movement	Observation
	Adds one level to the blue power	Central part with letter shines for an instant	---
	Adds one level to the orange power	Central part with letter shines for an instant	---
	Adds one level to the yellow power	Central part with letter shines for an instant	---
	Adds one level to the green power	Central part with letter shines for an instant	---
	Adds 1000 points to the player at the end of the stage	Bounces on itself in a bubble-like way	Collecting all 7 on a stage grants a perfect bonus
	Add a life	Clear screen spins	---

Controls

The player may move the ship in all directions using the required keys to go up, down, left or right. The controls allow the ship to also move in diagonal directions.

One assigned button is set to fire all weapons on every press while the other button is to change between weapon sets (types).

If the blue power level is higher than 1, the player can charge an special attack holding the fire button and open fire ,when fully charged, releasing it.

Go Back