Cool NES

Revision as of 18:34, 18 March 2025 by Vlad9407 (talk | contribs) (Added more overview info and a logo by oxiti8)

Cool NES is an NES emulator developed in Scratch. It is currently bundled in the latest release of WAVE.

Cool NES Emulator
Developer(s) GenericHeroGuy
Latest version 2.4
Active No
Platform(s) Web browsers
Emulates NES / Famicom
Accuracy Decent
Programmed in Scratch
License CC BY-SA 2.0
Source code [1]

Overview

Cool NES was the best and first playable NES emulator in Scratch until the release of aartNES. Performance in this emulator is quite bad, since with audio most games run at around 35 FPS, while without audio, most games run at around 50 FPS, still not full speed. It's unlikely that these issues will ever be fixed, since the emulator hasn't received an update since 2022.
It features support for 10 mappers and a menu which can be opened by pressing space, from which you can modify controls, reset the emulated console, modify the display and load a game. Accuracy appears to be similar to aartNES, albeit slightly worse due to having only 8 complete mappers and 2 incomplete (4 and 90), while aartNES has complete support for 10 mappers. It also probably has worse accuracy in general than it, although no tests have been done yet to verify that.

Mappers

0 1 2 3 4 7 69 75 90 206


Converting Roms

  • Scratch does not allow you to upload files directly during runtime, so you have to convert the desired rom to hexadecimal string and load it via the emulator's UI.