Probably a semi-realistic millitary shooter, like a mix betwen ARMA, Insurgency and RO2.

Killing people and making meth.

Ponies who eat butterflies and poop rainbows.

Something with a game-mechanic that hasn't been done before. Or something in the immersive RPG/Adventure genre with a plot that hasn't been done before.

Wuxia RPG.

Something offensive. Maybe even outright racist. So it would create shitstorms/hate/attempts to SWAT me, etc. Meanwhile I could just sit back and enjoy the show. Of course the title would be Attention Whore. Game would be free, because these days people have no decency. You know - selling games that look like they were made by an asylum patient in a fit of rage?

Main hero would be a transgender hipster airbender with a senpai syndrome... and a disabled cat waifu.

I have a terrible headache. I need an adult :(

Walker Texas Ranger Game

Turn based rpg with a good story like FF or Broken sword , i really miss those games

is the op trying to create a game based on other peoples ideas? i wonder...

sci-fi + rpg + open world

Massive open world game consistent of all genres and played all at the same time in all of time (from the creation of the universe to the end of the universe).

i would cross pathologic with silent hill, and make it turn based strategy

bear life fap simulator 2015

I have an idea in my head for a Western (as in the American Wild West) FPS RPG.

An open world rpg or strategy game that shows the events of humankind from the moment we came to be and the moment we went extinct or simply vanished from earth without leaving clues of our whereabouts.

Making an open world RPG of this kind would be difficult, a strategy based game can be easily speed up to show everything occur in short time, while a RPG would have to use timeskips to show different timelines, not to mention it would be more difficult to find a story that would tie with all generations from the very beginning up untill the end.

... bad rats

I would make a Shadowrun/Cyberpunk 3rd/1st person shooter that played in an open world sandbox style game! You would make a character that was either a merc, a mage, a hacker/decker, a rigger/tech, or a physical adept, with stats and a perks system. You'd start off "new in town" and have only one contact, who would give you your first starting jobs, but after a while, you'd make yourself known in the city and get bigger and better contacts, which give bigger, better, harder contracts to do. Once you got up in levels, you'd have to pick a corporation to get your jobs from, which I'd have at least several different corporations to work for, but you could only work for one (allowing for multiple playthroughs). Each corp would have different story lines, fighting against different corps, each with their own end game missions. The game would have TONS of sidequest to do as well!

RPG like Baldurs Gate with fights like in Icewind Dale and open world

wand simulator. Oh dear I think I made a typo.

Pornstar simulator

Plan Nr.1 Something like "skyrim" + coop + flawless engine so no game breaking bugs or glitches.

Plan Nr.2 Sci-fi fly through space like in "elite dangerous"/"star citizen" fight and stuff in first person or something + complex economic and guild system like in "eve" + everything can be destroyed or created like planets/space stations/solar systems + a really big galaxy like in "no mans sky" + can land on planets and colonize or build bases/excavation sites/factories which produce stuff/weapons or sabotage other player/guild bases + you and your guild can build titans (like in eve or even death star) and other holy or unholy creations which could destroy entire solar system just by shooting in to that direction (which of course needs a shit load of supplies from all the guild like in "eve") + possibility to scavenge cause space is so big so you could find abandoned and damaged space station/ships/artifacts so you could claim/repair and sell/just sell it or sell the location/take it apart/stuff + just be a pirate and steal stuff from others and maybe have some worlds to produce illegal goods even slaves or some other pirate stuff + of course you can transport contraband like in "elite dangerous" for good and fast cash or be a good guy and catch those who transport it for less but guaranteed cash.

Bad Rats... In The Space.