To install themes in Linux version of Uplink (on Ubuntu 14.04.1), here is what I came upon after browsing around: In installation directory (/opt/GOG Games/Uplink/ in my case), the .dat files inside /game folder are actually archives and can be extracted. So, all one presumably needs to do is to copy additional resources in respective dat file and replace the older ones with new, if needed. I followed this procedure to install a new theme in graphics.dat.

However- when I actually do this and start the game- instead of seeing new resources, all the images from the UI vanish and large crosses (X) appear in their place (possibly meaning that either Uplink wasn't able to find/use the new resources or some kind of hash verifying is going on to prevent external resources from running).

Has anyone has came upon the same issue? Is there any other easier way to install new mods in Linux?

Thanks

EDIT1: Simply replacing exactly one image file in graphics.dat with another of same name, resolution and file format result in the same problem (which means I am not supposed to mess with the default files, I guess).

It's not, I made sure.

I don't think you go about it correctly. Themes don't need to be inside the graphics.dat file, their whole folder need to be inside Uplink's root directory and needs to have a theme.txt file inside it (which sets up colors and what not).
Uplink will read it as a theme and you can apply it from the options menu.

At least... that's how it works on Windows...

Cheers!

I'll have to install it on my mint box soon, so I'll test this again in a few days and see if I can give you an answer.

Stumbled across this post while trying to solve an issue with adding new gateways to my linux install. Based on the mods.tx found in "[installpath]/Uplink Hacker Elite/game", one is supposed to add the files for the new gateways to "uplink/lib/data/gateways/" (for the definition files) and "uplink/lib/graphics/gateway/" (for the images files).

I tried placing all of the files for the gateways I downloaded into these locations (had to create the data/gateways and graphics/gateway paths) and fired up Uplink, but the new gateways didn't show up. After several different attempts at getting this to work, I finally just dropped the "data/gateways" and "graphics/gateway" folders directly into "[installpath]/Uplink Hacker Elite/game" along side the graphics.dat and data.dat files.

That worked! Now I have all of the gateways that I downloaded added to Uplink.

I would be willing to bet that themes are likely handled in a similar fashion.