Alien Sky/Gameplay

Main menu
The game has 7 options to choose from, the first one is Start Game, this shows you the missions you've unlocked and lets you choose which levels you want to play from, if no progress has been done yet, only Level 1 will be unlocked, the second one is Load, this loads your current save state, to produce a save state once a level is finished you have to click "Save", which can be loaded later with "Load" in the Main menu, the third one is Options which allows to adjust the volume of Sound and Music as well as remap the controls, the fourth option is Hall of Fame which opens the local leaderboards, this will be empty if nothing has been submitted yet, the fifth one is Help which opens up the Help section of the game teaching the player what to do, what are the power-ups and enemies it will encounter, the About section shows the game version and the people who are involved with the game, and Exit closes the game.

Interface
The interface of the game is on the right section of the screen, it contains the level number, your score, your number of lives, the HP you have or Armor Plates, the icon and the name of the special weapon you have, and the icon for Time Stop that will appear if you catch the power-up, it will flash when the Time Stop is about to run out.

Plot
The game doesn't have much of a plot, but what the player has to do is to use their modern spaceship to fend off an alien invasion on their homeland, which is most likely a galaxy or a solar system.