Cerius

When Rogorf, leader of the Phibiatrons, needs more iron ore, he sets out to
capture the human colony _Cerius_ and enslave its people. Armed with an
Avenger IV tank (complete with blasters, smart bombs and a limited shield),
your mission is to infiltrate his well-guarded lair.

_Cerius_ is a flick-screen shoot ’em up, characterised by your Avenger unit
being unable to jump, needing instead to rely on the arrangement of
teleporters in order to navigate Rogorf’s base. Push up to enter these; the
same applies for the improved weapons, ammo dumps and energy boosts.
Completing the levels requires considerable back-tracking, a fact made more
awkward for the player by the fact that the screens reset when you leave them.

Each of the three levels contains four Guardian enemies, all of which must be
destroyed. This is because they each release a letter, which must be
rearranged to form the correct four-letter password for the final door.