Classic FPS Doom is running in Microsoft Notepad thanks to game developer Sam Chiet, who shared footage of the shooter project that has now gone viral ...

And people would use all those 50 rounds, they played five to six hours … You could use Notepad to [adjust some code and unlock] the entire game." ...

Editing a game file in Notepad unlocked the full version of Balatro, causing panic at the publisher - which responded quickly to the unfolding disaster.