System emulators designed to run specifically on the Nintendo DS. Check the homebrew section for many actual ports and remakes, including the multitude of Doom and Quake era games.
It's not the movies or games downloads that I would worry about, like breaking into networks, downloading encrypted things, spying on network traffic. I have seen so many "Top Secret" seals on files when I was a kid
I was obsessed with finding UFOs, a surprising amount of US files where stashed on computers in other countries, China back in the early 90s omg sooo much