I don't know if this is the place to put this, but if it isn't i'd be happy to be directed to the right place.
First a little context.
I'm currently working on a prototype for a space shoot'em up game, and i'm having a hard time envisioning my goals for it.
Now There are varying sub-genres to the Shoot'em up genre, such as bullet hells, rail shooters(think house of dead overkill), multi-directional shooters(geometry wars) and others not mentioned.
you can read up on more of them here:
https://en.wikipedia.org/wiki/Shoot_%27em_up.
Now to my point. Like i said I want to make a Shoot'em up game, but i'm having a hard time envisioning how i would like it to be.
It will be a child of the The multi-directional scrolling Shoot'em ups.
So far in my prototype i have movement in multiple axis as well as a central mechanic that allows you to recover your life by "Absorbing" the minions of your enemies.
I'm not revealing much because i only have vague ideas of how i would like the narrative and gameplay to be.
I want the player to experience being a lone being in an old broken place thats long been forgotten by the outside world and every other creature they come across wants nothing more than to do them harm.(sounds overdone? So be it.)
Now it'll pretty much be a Shoot'em up with narrative and exploration elements though not too much, because i'm not trying to be overly ambitious with this game.
I'm just wondering what makes a Shoot'em up work?
Is it the huge selection of weapons?
Is it the large quantity of enemies that the player faces?
Is it the environment coupled with the enemies that places the player in varying difficult circumstances?
Also what would detract from a Shoot'em up or not flow so well with it?
I know that movement and control over the character is one of the, if not, the most important part of a game, so being able to maneuver between enemies and their attacks is a must.
I've only played a handful of shoot'em ups but if anybody could recommend to me Shoot'em ups that have narrative and exploration elements, i think that would be a good place to start, otherwise feel free to comment on how I know nothing about the genre.
Thanks.