Xevious

A group of humans remained, becoming our own ancestors.

Many years have passed, and the Xevians are now planning a massive comeback to their long-lost homeland.

The pilot Mu, his android companion Eve, and Mio, a Xevian who opposes the GAMP regime, are back from a space travel just in time to warn the Earth of the upcoming invasion.

The prototype fighter craft Solvalou is going to be used as the main weapon against the Xevian attack.

Xevious is a vertically-scrolling shooter which is notable for being the first game of that type to feature an aircraft flying over the Earth (as opposed to the outer space in other games), displaying views of South American nature.

It also introduced, for the first time, two types of enemies to fight: aerial and ground-based (the menacing SOL towers invoked by GAMP to aid their planes).

The player-controlled ship, Solvalou, is equipped with two weapons, each assigned to a button: the Zapper for air enemies, and the Blaster, which drops bombs on ground targets with the aid of a lock-on.

The aerial enemies are divided into sub-categories distinguished by their attack and behavior patterns.

Certain enemy types are immune to Solvalou's weapons, and must be avoided.

Xevious for Nintendo Entertainment System is currently worth €9.35 loose, €43.76 complete in box, and €140.03 factory sealed. Prices are based on real sales and update regularly on Gamevaro.

Xevious has a steady sales history on the tracked marketplaces, meaning it trades hands regularly and isn't considered particularly rare.

Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. For Xevious, loose is €9.35 and CIB is €43.76 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.

The PAL version of Xevious is currently worth €9.35 loose, versus €12.22 for NTSC-U. Regional price differences usually come down to print run size and regional collector demand.