Perhaps I can add some new information to help justify necroing the topic? You'll all have to be the judge of whether or not what I'm adding, is worthwhile new info. :)
So, as most know by now, TRON 2.0 has become available on Steam. I was completely taken aback when I found out. I wasn't expecting it to return for sale, any time soon. And, if anything, I expected GOG to get it first. (I'm sure 2.0 will show up on GOG eventually.)
The Killer App Mod was updated several months ago, to improve compatibility with the Steam version of the game. I'll do the same for the (inevitable) GOG version, if it turns out to be necessary. It also fixed some bugs, and added a few features. The main one being, restored online Multiplayer.
Killer App Mod v1.1a trailer With GOG using Galaxy to restore Multiplayer to many older games, I wonder what their plans will be for TRON 2.0 in that area. (If any.)
Since I can post links now, I'll point people to a sort of beginner's guide to modding TRON 2.0. It was written for the Steam version, but most of it still applies to the CD/DVD version. Again, if GOG releases 2.0, I'm sure a GOG-specific version will be written. There's also a link at the end of this beginner's guide, that leads to a more advanced troubleshooting page. (I co-wrote the beginner's guide, and wrote the advanced troubleshooting guide.)
Beginner's TRON 2.0 Modding Guide Work still continues on the next major version of the Killer App Mod. The changelog for v1.2 is probably as long as all the previous versions, combined. I have several videos on my YouTube channel showing progress, but I guess one video in particular encapsulates the most significant changes.
Killer App Mod v1.2 Trailer 6 Basically, it's more bug fixes (both to the game and mod), better widescreen implementation, completely new weapons in both Multiplayer and Single Player (based on weapons added in the Xbox version), new MP powerups, etc. It will also add support for three new languages to the game (text only): Russian, Hungarian, and Czech. These are all fan-made translations that are being included. There may even be a fourth Dutch translation.
Okay, I think I've rambled on enough. :)