I've been searching for other people that remember this game for over a decade. It turns out that while many people have played Knugg Raiders/Rally via websites like addicting games very few actually explored and joined the Superdudes community. I loved the Mobius Arena but like you I never managed to find anything other than a hand full of images. The most I've found is an image containing solely the artwork of the basic Superdudes element decks. Even as an Unknown player I can't even remember the names of many of the cards. It's a shame but I fear most of it is lost media at this point.

It's not much, but a fellow fan of the game made a video featuring this steam workshop page: https://www.youtube.com/watch?v=ZSa7gLKGeGg

I've been off and on again looking for the original cards and have yet to find anymore. If you'd like to help, check here for more info:
https://steamcommunity.com/workshop/filedetails/discussion/397315531/3192486000814787209/

Website is gone but there are some pieces of the original game online. I'm with you Lantis, very nostalgic for this game and would love to play it again. One of the first online communities surrounding a game

This game still being played?