ZeroRanger

ZeroRanger takes place on an Earth-like planet called Daikon, where aliens known as Green Orange have invaded with the intent of destroying all life. The aliens take control of Daikon's planetary defense force with the exception of two fighters. These two remaining fighters must combat their planet's possessed defense force before they can reach and destroy the main Green Orange vessel.

The current version of ZeroRanger contains two game modes: Green Orange and White Vanilla. Green Orange is considered the main game mode, encompassing the majority of the game's story. White Vanilla is presented as a score-focused training simulation that takes place before the events of Green Orange, consisting of arranged segments of stages from Green Orange. The third and final mode, Black Onion, is still in development.

Development of the game started with a piece of concept art in February 2008. The game was named FINAL BOSS and revealed in November 2009. The game was later given more unique names so that the game would be easier to search for on Google; the game was first renamed to FINALBOSS, and in April 2018 it was again renamed, to ZeroRanger.

The first idea during development was to create a vertical scrolling shoot 'em up like Guxt by Studio Pixel. The idea later evolved to become a mash-up of elements from many different shoot 'em up games. Taking inspiration from the limited blue and white color scheme of Guxt, ZeroRanger has a limited green and orange color scheme. The weapon collection system was at first taken from Guxt, where players can collect weapons during stages, and through trial and error evolved to the current system where two weapons are dropped by defeated bosses and players choose one of them.

Reviewers noted that ZeroRanger was densely packed with references to other shoot 'em ups while still having its own identity. Dominic Tarason of Rock, Paper, Shotgun called ZeroRanger a "lovingly assembled mix-tape featuring the best bits across all of shmup history". Marc Golding of HonestGamers called the game's green and orange color scheme a strange design choice that helped it stand out from other games in the genre; Golding also recognized the game's references to shoot 'em ups developed by Qute.

ZeroRanger was praised for being relatively friendly to casual players, while still having the difficulty expected of arcade-style shoot 'em ups. According to Gabriel Jones of Cubed3, players are "sufficiently challenged, but never frustrated". Players may die often but are awarded extra lives often as well. Players can earn continues, and can start the game on any stage they have previously reached.