Ziggurat

As the "Last Human on Earth", the player fights off approaching enemies with their laser rifle. The player-character, stationary atop a mountain peak (ziggurat) at the top of the world and end of time, attacks incoming mono-eyed alien freaks and dies upon the first hit from any enemy. The player earns a score based on their number of aliens killed before succumbing. The aliens vary in size and shape, from "blue freaks" who pogo like the Tektites from Zelda, to stealth yellow freaks, to shielded, aggressive red freaks, to bullet-sponge giant freaks. There are two shooting modes: Precision and Slingshot. In Precision, players control the shot by sliding their fingers along the bottom of the screen, which calculates the arc and direction of the shot. In Slingshot, like Angry Birds, players draw back their shots like slingshots. The shot grows in power the longer the screen is held, and the shot is fired when the player lets go. Weak shots will also arc down with gravity, and strong shots will decrease in power if held too long. There are no power-ups, no gamified micropayments, and no pause function, but there are achievements such as living to see the end of the universe. It also integrates "pro-social" features like GameCenter and Twitter. Ziggurat uses retro-style 16-bit graphics and an 8-bit chiptune soundtrack. The player-character is blonde and dressed in a red jumpsuit, and clouds pass by in parallax motion in the background. The sun's position in the distance appears as a function of game's duration. The chiptune soundtrack includes wailing solos, and its pitch appears to intensify with the game's difficulty. The player's death is accompanied by a "wince-inducing digital screech" or siren and a "blood-red screen".