Unreal

1998 single-player FPS which spawned the predominantly multiplayer series (and terrifyingly prolific game engine) of the same name.

Unused Objects
All of these objects can be spawned by typing summon [name of item] in the console.

Enemies
Squid

This enemy is almost fully functional. If spawned on land it will bounce around frozen in the position shown until it finds water. When in water it swims straight toward you then turns and bite you with its beak. Its other attack emits black smoke (ink) particles.

Weapons
Quadshot

An incomplete weapon with no view model or animations. It fills weapons slot 3 and places a huge cross-shaped polygon on your screen while equipped. Firing it switches to your next weapon.

Its ammo also appears in the game's files. It has 'X762' written on the side and fills slot 6 when collected. It has no polygons on the bottom and you can see right through it if you view it from underneath.