I was trying to find the Epic of Gilgamesh in original writing (maybe cuneiform isn't the original writing system that was used?) and couldn't find anything. There are many translations, transliterations, and cuneiform exists in unicode as well. Technically, there isn't anything in the way of writing this text in digital (unicode) format in its original writing system. Did someone even attempt to do this. It doesn't have to be historically accurate as long as it's not syntactically incorrect as I was just looking for something to paint on the wall in my apartment.
The complete composite epic was published in Andrew George (2003), The Babylonian Gilgamesh Epic: Introduction, critical edition, and cuneiform texts, Oxford: Oxford University Press. Great edition with very legible copies, though they're drawn rather than unicode.
To shed some light on methodological issues: digitising cuneiform into unicode is a pain because of the variations in writing between periods. Given how large the cuneiform character set is, you might need different unicode characters for each major period (old/middle/neo/standard/late), language (Sumerian/Akkadian/Hittite/Eblaite/Luwian, etc.), and dialect (Babylonian/Assyrian). Since assyriology and cuneiform studies aren't massive fields, there just isn't much of a drive to create and update an exhaustive set for everything; it's much less labour-intensive just to use a drawing of the text, and normally the only people who use it are assyriologists who can read the tablets anyway. I should note that Rykle Borger experimented with unicode in his third edition (in 2006) of Babylonisch-Assyrische Lesestücke (a compilation of cuneiform texts for university courses), and wrote parts of the Code of Hammurapi, Samsu-iluna, the Middle-Assyrian law book, and Ashurbanipal's campaign against Egypt in it. It's not great, though, because it takes up much more space and only really works when you've got an unbroken text (which is rare).
Cuneiform was the original writing system of both the Sumerian Gilgamesh Cycle and the Akkadian Epic of Gilgamesh, though the languages used were quite different. I don't believe that anyone has attempted to digitalize the Epic in the original cuneiform, if for no reason other than it being terribly inconvenient to try to do so without language fluency.
The British Museum has a number of images of tablets found at the Library of Ashurbanipal, which give most of the Epic in the original Akkadian cuneiform. A few fragments of the story would not be discovered until later, with the most recent section of the text only being discovered in 2015, and even today some fragments of the story remain missing.