Alright /v/ let's conceptualize an AlienS video game piece by piece.
>You first fag.
All I have is a linear gimmick-ridden game with each gimmick separated and pretending to be a new skirmish campaign, when it's just the same missions replayed and arranged by category.
You come to a stop at a giant metal door. You go inside the generator room and pull the lever to activate them. Everything lights nicely, but you see the door you came through closed by an alien and the control panel destroyed. Another alien slaps your shit, pulls the lever and acid burns it.
This is an assassin alien section where you shoot in the dark and it gets progressively more interesting as the game advances.
A)
Everything is dark except for some pre-placed flares and your own short-ranged light to know if there's a wall in front of you.
The aliens are very lenient this round, giving you plenty of time to run up to the lights and shoot from there. You have the funny surprise of the alien breaking the light or throwing the flare somewhere else as you approach.
2) The room is lit but the aliens developed perfect invisibility(luckily they're slow in this phase) You have to damage them enough to make them bleed. 2.5) Careful not to damage the gas pipes and generators.
3) All the lights are on, but the aliens can cause temporary blindness to you and you have to fight like this.
4) Any source of light is often a trap to a pit fall. The aliens at very slow but very big. Tails become a problem if you don't shoot them in time.
5) You have to use the environment and ride moving crates on ceiling rails. All while the small aliens try to make you fall in the darkness full of blind zombie aliens which attack via acid.
6) You have to use the environment and lure them at X Y Z coordinates and kill them on that exact spot or else you're stuck in the room.
B) Advancing doom wall.
There's a slow moving doom wall made out of aliens. Doors can hold them. Ocasionally a few real aliens pop out of them to fight you. Some doom walls have health and can be killed by flamethrowers and rocket launchers alone, some are too gargantuan in size to ever be stopped.
The first few battles you face is against a doom wall which moves away from you.
With the second batch of doom wall you start a tug o war ala Karateka where you fight for territory.
The third batch of doom walls always put you in a corner, but you always escape or the wall always stops and waits for you to finish it off.
The fourth batch puts you in a corner and you die if you didn't deal enough damage since the beginning.
The fifth batch Doom Wall A) - smaller multiple doom walls chase you around the map and you have to push against the little ones to escape the big ones. Starts off easy to train you, then gets a hell lot harder.
Sixth batch - Doom Wall B) A non-advancing doom wall because it is present in all the walls of the whole level. This doom wall can grab you and kill you. The distance between you and it varies from inactive to 1-10 feet.
5) You fight a vertical doom wall from an elevator you control.
18) Doom Wall B)
19) Doom Wall A)
20) You fight a gargantuan vertical doom wall inside a large pit from a bunch of ladders, walls you climb.
21) Fight a gargantuan Doom Wall type A in your APC in a large crater.
Assassins/dark sections (x)
Doom Walls (x)
APC chase sequences
Pre-plan alien hive raids
Pre-plan base defense and evac plans
Smaller ideas:
Elevator sections/safe areas which aren't safe.
Alien kidnaps you, facehugs you in hive, got to remove chestburster in time - missions.
More small ideas:
Alien suit missions
Exo suit missions
Detective/The Thing missions
Ammo preserving missions
Boss missions.
Stealth chase sequence missions
Aliens come in all shapes and sizes, but their abilities differ greatly and feel otherwordly. Aliens can be immune to most bullets or non-bullets. Aliens can slowly go through walls. Aliens can morph and transform between each other. Aliens can become queens. Aliens can revive. Aliens breathe fire and various gases. Aliens can place bombs and viruses. Aliens can posses you. Aliens can swing on webs. Aliens can build walls at doors to block you. Aliens can go through you to kill you. Aliens can blind you, burn you, electrocute you, scare you, rape you, make you sick, mess with your mind, disguise as humans.