If you're not cool enough to do it manually, you can look up tools like Upside-Down-Ternet for playing games with people on your wifi.

"1337: Part 1", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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If you're not cool enough to do it manually, you can look up tools like Upside-Down-Ternet for playing games with people on your wifi.