Well, the first impact would be that there would've been no resurge in popularity of Hanafuda in the late 1800s. There would be no Nintendo taxi company, love hotel business, TV station, food company, or toy manufacturer in the 1960s (not that there would be much missed there; toys aside, Nintendo didn't do well in those ventures). Gunpei Yokoi might still be alive now (hard to say for sure, stuff does happen), but neither he nor Shigeru Miyamoto would end up being world-renowned for their work in the gaming industry.
The gaming industry would likely have eventually taken root again anyway after the crash of the early 1980s, but it wouldn't have likely developed anywhere near the same way. The industry was largely American-dominated before Nintendo stepped into the scene, and would likely remain that way since Sega didn't get into the market until after Nintendo had shown that Japanese developers had a good shot at it. Console gaming at large would likely have remained an American pastime more than a Japanese or European one.
Sky Render - Sanity is for the weak.
