Over the decades, people have managed to get the original Doom to run on all sorts of interesting devices, and a fan ports the game to Notepad.

Windows Notepad is a simple text editor that has been around since the 1980s. This software commonly allows users to create and edit basic text documents.

Balatro's first demo could be edited with Notepad to unlock the whole game—the solution? 'Bury it as soon as possible' with a 'newer, shinier version' Story by Harvey Randall • 15h ...

Apparently, it really was the case that editing a game file in Windows Notepad could get you access to the full version, rather than the limited 50 rounds of play that the demo was restricted to.

LaMothe, mathematician and computer scientist and author of the immensely well-received Tricks of the Windows Game Programming Gurus, has reprised that technohit with the same thing for 3D simulation.