A 2.5D game uses either 3D or 2D to simulate the other. In modern day, a 2.5D game normally uses a 3D graphics engine but sticks to a 2D plane (e.g. Trine). More historically it would mean a game that uses 2D images to create the illusion of a third dimension (e.g. Diablo 2).

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How are “2.5D” art assets created?

By "2.5D" I mean the art style in games such as Roller Coaster Tycoon, Age of Empires 2 or Fallout 1 and 2: Everything in the games appears to be created with a "pixel art"-like tool. Am I correct? ...
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2.5D game development

2.5D ("two-and-a-half-dimensional"), 3/4 perspective and pseudo-3D are terms used to describe either: graphical projections and techniques which cause a series of images or scenes ...
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Where do I start if I want to independently learn game graphic design? [closed]

I want to learn how to create custom graphics, not use freely available resources. But I have been looking around for articles or tutorials on how to start with 2D game design in general, and I can't ...
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How do I render terrain in a 2.5D perspective, like in the game Don't Starve?

I have experience in making 2D side scroller games such as Terraria, but now I want to challenge myself and make a game that has a 2.5D perspective. The game I am trying to mimic is Don't Starve. ...
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How can I generate isometric sprite sheets from 3D animations?

I want to generate sprite-sheets for an isometric projection of various 3d assets purchased from the Unity3D asset store. I'd preferably also render the normal maps. I am a programmer, but new to 3D ...
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How do I create a 2.5d parallax effect?

I have a decent background in 3D graphics and programming, but I'm new to game development. I'm currently exploring different possibilities and I really want to make an RPG game. I was thinking about ...
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Displaying sprites in a 2.5D raycasting engine

I'm developing a raycasting engine like the one used in DOOM, Wolfenstein 3D, etc. My engine is capable of correctly displaying walls and textures on walls, but I'm stuck at sprites rendering. Given ...