It is now possible to play NES games in a browser. There is a play button within the game page for each emulator-supported game. When clicking the button, you are redirected to the NES emulator page. The selected game is automatically loaded in the emulator when redirected. Not every game in the catalog is supported by the emulator; thus, you will not find buttons on every game page. I have implemented the most common mappers, so most of the existing NES games are playable. You can visit the nes-emulator project on my GitHub or read the FAQ if you want to know which mappers have been implemented. I have no intention of making the most accurate emulator. There are already lots of other quality emulators out there. I just wanted to make a JavaScript project and chose to do an NES emulator. It is a fun project to do because you see instant results, cover many aspects of JavaScript, and are rewarded with the possibility of playing old classics!