There's a number of mods for Minecraft that put Lua into the mix. One I was using (ComputerCraft?) had all the common UNIX commands implemented as things like l

There's a number of mods for Minecraft that put Lua into the mix. One I was using (ComputerCraft?) had all the common UNIX commands implemented as things like ls.lua, so typing "ls" actually just ran a Lua script with the corresponding name. You really couldn't get a more hackable computer. These instances can have 4-16MB of memory allocated to them which honestly is way more than is necessary. They can make remote HTTP calls. With the right server settings they can even adjust the in-game weather to match the real world. The possibilities are literally endless. A few lines of code can produce immediate results, and you can iterate and expand on that to make elaborate systems.