Alien Trilogy

Each section consists of about 10 missions.

In every mission, certain goals must be accomplished to continue.

These include killing a certain number of enemies, finding items or activating switches.

Enemies include everything the alien life cycle provides: facehuggers, chestbursters, warrior aliens, dog aliens (from Alien³ ) and alien queens, one of which waits in the final mission of every section.

In addition to the Aliens, you also have to fight employees of the Company, who have either been infected by the aliens and are beyond saving or who actively want to obstruct your mission.

Weapons to be used include pistol, shotgun, pulse rifle, flame thrower and smart gun.

Ammunition, health upgrades and other useful items are scattered throughout the levels.

Hidden areas may be uncovered by using explosives like grenades and seismic charges.

An auto mapping system helps in not getting lost, night goggles and shoulder lamps (running on battery power) allow you to see in the dark and the motion tracker tells you where your enemies are - but only if they are moving.

Alien Trilogy for PlayStation is currently worth €24.74 loose, €11.71 complete in box, and €35.27 factory sealed. Prices are based on real sales and update regularly on Gamevaro.

Alien Trilogy 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 Alien Trilogy, loose is €24.74 and CIB is €11.71 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.

The PAL version of Alien Trilogy is currently worth €24.74 loose, versus €29.96 for NTSC-U. Regional price differences usually come down to print run size and regional collector demand.