2.5D FPS game

Do you guys know any 2.5D FPS game made from 2D? I wanna see how they handle the 2D graphics and make them look like 3D. Tell me if you know some. Thanks
You mean like Doom?
So Doom has low system requirements 'cause it's a 2.5D game?
uhh.... I always thought 2.5D was a game that only had 2D in gameplay/physics but had 3D visuals.

Like Shadow Complex:
http://bulk.destructoid.com/ul/144955-review-shadow-complex/ShadowComplex_Screen17-620x.jpg

Which had 3D graphics, but was basically a 2D sidescroller/Metroidvania game.



If you have 3D graphics, and the gameplay is 3D... then the game is just 3D, not 2.5D.


So I don't know what you mean by "2D graphics and make them look like 3D". The graphics are either 3D or they're not.
2D graphics that create the illusion of 3D, I think that's what he's looking for.
Isn't that just 3D graphics?

All 3D graphics are just 2D giving the illusion of 3D. Unless you have some kind of magical 3D holodeck monitor -- and I'm pretty sure those don't exist.


EDIT:

I should say -- I'm not trying to be a smartass. I just genuinely am confused and don't know what the OP is asking for. His question makes no sense to me.
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@Disch
It can mean that or games where the models are actually sprites but drawn in such a way as to give the illusion of three dimensions. An example would be the original two Age of Empire games: http://images.rtsguru.com/articles/images/6000/5473/AOE2HD-a.jpg

Also one could argue that all 3D graphics are illusory since the monitor is basically just a m,n-matrix of pixels. The renderer performs a transform on the (x, y, z) co-ordinate of each point to generate the (x, y) index into the matrix ("index into the matrix" sounds way cooler than it is... now I'm imagining a game where you have to interact with The Matrix from the outside using debugging tools or something).
Chris. We need to make this game. And put it on steam. I would play the shit out of it.
@chrisname: I've never heard that called 2.5d before. I've just heard that called 'isometric'.

In any event... regarding OP's question... how could you have an FPS ("first person shooter") without having 3D graphics? Doesn't the "first person" part require 3D graphics?
Disch wrote:
Doesn't the "first person" part require 3D graphics?

Not necessarily, it could be something as simple as using a mouse to move a crosshair over a flat plane where enemies jump up from behind cover. I remember a few flash games like that. Obviously that means characters can't move towards or away from the player, but they can be positioned and scaled so as to give some illusion of depth, which was the case in the flash games I played.

@Cheraphy
We can brainstorm gameplay ideas in a separate thread if you like. It could be a new community project like Chess++ (whatever happened to that, anyway? I forked the repo but never got around to contributing because I was busy with my own projects).
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I have seen Shadow Complex, Duke Nukem 3D, Little Big Planet, Starcraft, and Doom (original) as examples of 2.5D games.

http://gaming.stackexchange.com/questions/1909/how-can-a-game-be-2-5d
You can move in the back and front of Little-Big planet, so that technically eliminates that from the list based on that definition.
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SimCity 4 is 2.5D.

A model is created in any 3d modeling program. Along with the actual model, one creates a bounding box around the model ( a cube by default ). To export into the game, 20 pictures of the model are created, 1 for each zoom/rotation combination. The pictures are mapped onto the bounding box. The bounding box is rendered in-game, so there is an "infront" and "behind". However, it's a trick because you're also looking at a sprite ( the picture that was taken ). Not really 2D, not really 3D.

I might have argued that this was the first 2.5D game, but I don't think I will :)

Edit:
I used to do a fair amount of modding for that game, here are some random pictures of various models and their bounding boxes:
http://imageshack.com/a/img513/9670/finalq.jpg
http://imageshack.com/a/img714/188/50314111.jpg
http://imageshack.com/a/img828/145/94144314.jpg
http://imageshack.com/a/img855/6724/shadowissue.jpg
http://imageshack.com/a/img542/8897/completes3d.jpg
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Fredbill wrote:
You can move in the back and front of Little-Big planet, so that technically eliminates that from the list based on that definition.


In IGN's review, Chris Roper also reported issues with the control system stating that the game's heavily physics-based gameplay "left a few corners on what should have been a razor-sharp control scheme". He goes on to say that the character acceleration and deceleration "isn't as quick as it could be" but that his biggest complaint is the way the game handles player movement between foreground, middleground and background on the 2.5D plane. He says that "there are instances where it doesn't do what you want it to do, and these points stick out like a sore thumb."
Cheraphy wrote:
2D graphics that create the illusion of 3D

Yes, that's what I meant
In any event... regarding OP's question... how could you have an FPS ("first person shooter") without having 3D graphics? Doesn't the "first person" part require 3D graphics?

You use 2-D Sprites and mess with the scale to make them appear bigger or smaller. You set a maximum scale to represent them "running into you" and you use the X and Y of their current local bounding box to determine if your shot "hit" or not.

I started doing a proof of concept with this idea in SFML awhile ago and I even had a haphazard melee system for it. But I couldn't get the angle on the walls to appear just right, probably because I was using MS Paint.
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