I thought it might be a good idea to collect some useful resources for people participating in game jams. I guess most of us are coders which means that the coding part of making a game under pressure and with constraints isn't an insurmountable task. The problem, at least for me, is creating art, sound effects and music. Some jams allow you to use art and other assets created by others, while some jams require that both code and assets are created during the jam. Since you're working under pressure the tools should also be easy to use and learn but still allow you to create something reasonably useful and coherent.
I usually also struggle with making my games fun, but that is something else than providing a collection of links to tools and assets. Still, if someone has some really solid links to articles about game design, specifically for game jams, feel free to share them here as well.
Ok, let's start.
There is already another forum post about that topic. Please contribute to that topic.
Pyxel Edit - Tile, tilemap and animation creator ($9, Win and Mac)
Aseprite - Animated sprite editor and pixel art tool ($14.99 or build it yourself, Win, Mac and Linux)
Piskel - Browser based pixel art editor
Pixen - Pixel art editor ($9.99, Mac)
SOUND & MUSIC
FREE SOUND EFFECTS
I don't know of any good sites. Anyone?
TOOLS TO CREATE SOUND EFFECTS
ChipTone - Browser based sound effect creator. Easy to create sound effects that bring you back to the glory days of the 8-bit consoles and computers.
Bfxr - Browser and desktop (Win and Mac) based sound effect creator. This one is also based on Sfxr.
I've also come across the following tools but from what I can tell they are inferior to the ones listed above (please correct me if I'm wrong):
as3sfxr - Predecessor to ChipTone. Browser based. Based on a tool called Sfxr which was created for Ludum Dare 10.
SFMaker - Yet another browser based sound effect tool inspired by Sfxr.
LabChirp - Windows only sound effect creator.
TOOLS TO CREATE MUSIC
BeepBox - Glorious browser based chip tune creator
SoundBox - Browser based music tracker