Here's the list of required installations to play on the forum.
First of all, the texture pack:
Installation highly recommended but not compulsory.
After installing the texture pack, you can see that some blocks (such as dirt and redstone block) aren't beautiful, to remedy it, you have to download the program below then copy it on your desktop and start it (no installation):
Tick all the box then click on Patch.
It's also highly recommended to put Brightness to Bright and to put Particles to Minimal.
Thanks for reading!