The search results do not specifically mention the material used for the case of the original Nintendo DS model, often referred to as the "DS fat" or "phat," released in 2004. However, common materials used in electronic device casings include acrylonitrile butadiene styrene (ABS) and polycarbonate. ABS is a popular choice due to its durability and impact resistance.
Without specific information from Nintendo or detailed teardown analyses mentioning the exact material, it's reasonable to speculate that ABS could be a likely candidate given its widespread use in consumer electronics at that time. However, without direct confirmation, this remains speculative.
For comparison, modern cases like those for game cartridges (e.g., Nintendo DS game cases) are made from materials such as virgin polypropylene1. While this does not directly inform us about the original DS casing material, it highlights how different plastics can be used across various components within a product line.