Tentative titles: Coding Pink Elephant.
The (back) story (probably longer than necessary, but it’s my idea and I can ramble all I want):

The year is around 712 A.E (After Eerschwits, which is about 300-500 years from now). The world is severely overpopulated with humans and just about every other animal is either extinct or endangered. Because of this, couples that choose to have children can only have two: one boy and one girl. However, despite many advances in medical technology, doctors are unable to prevent the occurrence of twins, which for the time is extremely rare in the eyes of the public. The current propaganda says that scientists have the ability to genetically alter one of the embryos to ensure the one boy, one girl balance. Of course, they can’t do this. If a regular pregnancy breaks the boy/girl balance, it is terminated. In the case a twins, a few things can happen. If it actually is a boy/girl combination and the family doesn’t already have children, the doctors do nothing. Malzeltov. But if it’s not, or the family already has one child (of the opposite sex as the fetus. If it’s the same, the pregnancy is determined to be a ‘miscarriage.’), there are a few different choices. One, the infant is sent to a different part of the country to either replace a stillborn or given to a couple that is unable to have children. Two, it is sent to a rearing facility for processing. Or three, the infant is terminated if there is no immediate need for one. Because of this system, mothers are only told the gender and number of children if it keeps the balance. A person pregnant with an ‘extra’ is only told of the one, and since they are unconscious for child birth, they do not know of the ‘extra’ child.

In the case of the character (not sure if it’s going to be male or female. I may make it an option for the player to choose gender), you were sent to a rearing facility. There you went to school and were taught the basics of education, interaction, and-- most important-- history. (the major focus on the pseudo-government group lead by a man known by Eerschwits, who were responsible for ‘advancing and saving the human race’) Once you reach the appropriate age, you are put through a series of tests. These tests will then determine what place the person will occupy. This includes mundane/menial/dangerous/undesired jobs, scientific/medical research (even rats are an endangered species, so why not use the over abundant humans?) , expendable military (infantry, pilots, just about anything that would be below a captain’s duties), or, if the test results were bad or there was no need at the time, termination. In your case, the only viable option was medical research. (I know this seems like a lot of ‘blah blah blah,’ but it’s all stuff you learn throughout the game anyway)

This is where you actually get into the game. You are sent to a facility called the Eerschwits Medical Research Center, which doubles as a research lab and hospital, for processing. The ‘process’ is were scientists put you through a two-stage chemical coma in order to make you a perfect drone for your niche in life. (if you’re bound for toxic waste cleanup, all you know is toxic waster clean up. All you can fathom is toxic waster cleanup. It’s your life, the topic of conversations, subject of your dreams. You are made to be physically unable to consider anything that is not toxic waster clean up and the basics of interaction-- just because you’re a drone doesn’t mean you have to be a rude drone) Your character completes the first stage of the process, which alters the brain chemistry and perception to allow for the reprogramming that comes with the second stage. But before you can be given the drugs to start the second stage, something happens-- the Officials (the equivalent of a government run police/security force) are tipped off about a foreign spy that has snuck into the hospital. The staff is detained, for a relatively short period of time, while the area is swept. For you, this completely throws off your processing. While the hospital staff was detained, the sedatives keeping you unconscious wear off. You wake up confused, with only a vague feeling of who you are. This is when the main feature of the game appears. Because of your altered brain chemistry, you have hallucinations. Some are obviously hallucinations, others are not. As the game progresses, it becomes harder and harder to tell the difference between reality and delusion-- and harder to break the hallucination. There is a way to help prevent the hallucinations, the drug Paccerebilliquidus, which is used during processing to keep the brain ‘neutral.’ You can find IV bags of the stuff at various places in the hospital, but it wasn’t meant for long term usage. As the game progresses, you start to develop an immunity to it. There are other drugs which you can use with Paccerebilliquidus to increase it’s potency. Of course, you have to be careful. It is possible to take drugs that can be severely detrimental to your health, give you nasty side effects, or have bad reactions with drugs you’ve taken.

Once you get into the game, you will run into the foreign spy-- I’ve been calling him Rook. Rook, because he’s an espionage drone, thinks you are a fellow spy and his contact at the hospital (nothing you say or do with convince him otherwise). Because of this, he gives you information, helps if you get stuck, gives you supplies. Some of the things he gives you include vials of legal chemicals to ‘keep the Officials off your back,’ smoke grenades if you need a quick but incredibly attention grabbing exit, small hand held weapons (guns, knives-- excluding the surgical kind), and a portable radio ‘liberated’ from the Officials. The radio lets you listen in on the Officials and their movements, but it does have a down side. They can figure out that you have a radio and, if they do, use it to set up traps.

There’s another thing about Rook that makes him different from other ‘merchant‘ characters: if you kill him, he is dead. He is NOT coming back. (which makes for a good way to tell if something is a hallucination. If he’s in it but he’s dead, instant fake reality)

The further you get, the more information you learn in your quest to figure out what the hell is wrong with you (see first two paragraphs). Eventually you learn of the drug Remeoxemplarmentis, which is used to reverse processing and return your mind to its original state. Now you just have to find it, but once you find out about this bit of information, you learn that your twin works at the hospital. You can meet up with him and-- if he lives-- use his help to get to the other research facility where the drug is kept. If he goes with you, you will end up exposing the governments secrets about drones and etc. If you go it alone-- or he dies-- you get your sanity back, but any exposed secrets are quickly covered up.

For the most part it will be a stealth type game. But there will be a few out-right conflicts, though most of those will occur during hallucinations. When it comes to actual fighting, your opponents are quite ranged. Your main concerns are with the Officials, the people that are sent to the hospital to capture and/or kill you. But, depending on how you interact with the hospital staff (you can actually use a nurse as a human shield, which the staff really won't be happy about), they too can given cause to attack you, pursue you, or rat you out to the Officials. The hallucinations are the fun fights, in my opinion. Your opponents can range from regular people (staff, Officials, mailmen) to zombies, chickens, and elder gods (what game is complete without a cthulu cameo?). As for the battle system itself, it'll be similar to MGS or Dead Rising. There will be differences (like really being able to use your environment), but I haven't worked out the details for it yet.