By A Mystery Man Writer
Creating a seamless texture is ridiculously easy if you use GIMP, a free program similar to Photoshop. Find out how!
Tutorial: How To Create A Seamless Texture in GIMP - Game Art Guppy
CS 328 Introduction to Computer Game Development
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How to make a seamless texture in GIMP tutorial - Indie Devs - IndieDB
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Create perfectly repeatable textures — Tutorials —
Illustrator Tutorial: Basic Backgrounds - Game Art Guppy
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Tutorials Archives - Page 3 of 3 - Game Art Guppy
How to make a simple, generic grass texture in GIMP tutorial - Indie Devs - ModDB
How to make a seamless texture in GIMP tutorial - Indie Devs - IndieDB