I would love to make a papermario style rpg with really tongue in cheek narrative, a wacky just within lore plot and cutesy imagery... for most of it. The rest would have horrific visuals, severe grimdark aspects and stuff that will make you puke. also the ost would probably be by liquid stranger.
A roguelike game about a group of IG soldiers that try to scape from a world invaded by demons, you will start with 3 people in your group and the maximum is 5 (your regular guard, sergeants with melee weapons, priest to support comissars and maybe even a sanctioned psyker as playable class), you might or might not find other survivors, you might or might not find weapons and ammo, and you might or might not find food and medical supplies, you will die a lot (permadeath) because of the insane dificulty and the randomized world. A 3rd person action game following the story of The Inquisitor novels, or at least the Gregor Eisenhorn part, it should be a somewhat linear game (with a few sidequest on each location) and respect the novels as much as possible. The same type of game about the Gaunt's Ghosts, but being a fps, you could choose between different book characters and play as Gaunt if you want to play with a sword, Larks if you like snipers, Mkoll to play as scout etc... And last but not least, a fps or 3rd person shooter involving mercenaries, being a group of mercenarios you can include different races (Kroot (maybe even Tau?), human, Eldar) to play as and also different planets, some craftworl eldar might pay you to fight for a exodite planet, Tau might use you as cannon fodder against nids or orks, and I'm pretty sure some people on the Imperium will be more than happy to pay a group of xeno mercenarios to do some dirty work against their own...
Open world sandbox action rpg about being an ork. I just feel orks would fit a snadbox game the best (and I'm not biased at all as you can guess by my avatar), since might have the highest number of possible play styles. You can be a mek boy and craft stuff, you can form your own warband, you can be a runtherda and play as a pet class, be a weyrdboy and be a caster, be a loota and loot stuff, or you can just kill stuff by shooting , stomping , burning, chopping, slicing, dicing, melting, blowing up, shooting (as in using the person as a projectile) anything that stands in your way. The story could be something like this: you are a jolly ork on his first waagh but some of the ships are hit by meteors and they crashland on a nearby planet, the survivors are left behind on the planet and soon begin to unite in different clans. Your goal is to survive the hostile environment, find a place in this "society", get loot and fame, become bigger, stronger, meaner and greener, kill stuff, explore the planet, kill some more stuff. Soon you will find out that this world was inhabited and ruins of an ancient civilization are all around the planet, this ruins contain strong weapons/armor /parts you can use to craft/ vehicles you can hijack but also the same creatures that wiped out all intelligent life off the planet.
Yes let me customize my kill teams birth chapters, their weapons and customize the crap out of them and I will slay or attempt to slay any and all xenos scum! So pretty much Xcom but with space marines.
