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Arcanum is actually pretty stable for a Troika game, but as anybody who's played it knows, there's tons of minor bugs, unbalanced items and quite a bit of unused content which simply never got patched or enabled.

Fans to the rescue. Thanks to a modder named Drog, we not only have a fully working widescreen patch, but a huge fan patch that fixes tons of issues. And the great thing is, it adds nothing that wasn't already in the game, just re-enables some things that seem to have been accidentally left out, like extra dialogue options, voice clips, and items.

WARNING: While I and many others have played through the game with these patches, they are technically unofficial, and the modder in question has said he is finished with Arcanum modding, so expect no support. Also, you MUST apply them before you start a new game, to avoid issues with incompatible saves.

Apply these in order from top to bottom:

The latest version (12/28/2009) of the fan patch. Essential. Must have. Get it here.
http://www.terra-arcanum.com/downloads/arcanum/fixes/UAP091225.exe

High-quality townmaps (Better looking in-game maps, also fixes some potential missing map errors):
http://www.terra-arcanum.com/downloads/arcanum/fixes/HQ_Townmaps.exe

And the High Resolution Patch. Weidu-based, so follow the directions to set it up for your system. Will allow you to run Arcanum at pretty much ANY resolution, provides an optional "compact" UI and optional high-res fonts:
http://www.terra-arcanum.com/downloads/arcanum/highres/HighRes1.1a.exe

Version: 1.5.1 (October 4, 2019): http://terra-arcanum.com/drog/uap.html#download

And that should set you up real nice. If you want more info on Arcanum, or any of the other Troika games, head to http://www.terra-arcanum.com and have a look around. Note that they also have some other mods and things for Arcanum, but most of them significantly alter the core game, or are incompatible with the UAP bugfixes. You might want to give the high-quality music patch a spin, but the original music sounds excellent and I wager you won't be able to tell much of a difference. For the purest and most hassle-free experience I recommend you stick with these patches for your first playthrough.

EDIT: If you have any problems with not being able to download, try refreshing the download page, or try the alternate links at this forum post (thanks sanpats), or for the 91225 update and High-res patches try these alternate links, courtesy of Petrell: UAP91225 update and High-res patch.

EDIT 2: Removed old patch version, as apparently version 91225 is stand-alone. Vagabond says it is anyway. Blame him if it breaks.

EDIT 3: Removing contributed torrent link due to torrent site jumping the shark.
Post edited 2 days ago by Irrehaare
You can find most Drog's work (so no 100MB+ files) on my site as well:

http://ton-hur.mbnet.fi/files/Arcanum/
Post edited November 26, 2017 by Petrell
A mirror for the Unofficial Arcanum Patch (UAP) is:

https://drive.google.com/open?id=0B5j6iD8ffNt7b3VnOTZSUk9BcVU
____________________
Installing [Arcanum High Resolution Patch] [1.5]

Checking version...
Copying and patching 1 file ...
FAILURE:
Arcanum.exe version 1.0.7.4 (English) required.
Stopping installation because of error.
____________________
Which is weird since Arcanum.exe properties says "version 1.0.7.4 (English)"
Any ideas?
I have the exact same problem as badunius. Tried to patch manually to 1.0.7.4 with the appropriate Patch-file. But that only broke the game entirely. :/


Edit:
So I've got it to work now. Playing in german language in 1920 x 1080 resolution with no stuttering so far.
My steps:
1. Made a clean install with GOG-Galaxy
2. Installed the german patch from Compi-Ware
3. Installed the two inofficial Patches UAPv081004 from Drog Black Tooth’s (posted in the "Sammelthread zu Deutsch-Mods..." from user PoooMukkel
4. Installed the HighRes 1.5 patch with DDrawWrapper = 1 - which suddenly worked after installing the two inofficial patches

Maybe this helps someone. :)
And sorry for my bad english

@badunius: I think the HighRes-patch will work after installing the unofficial patch.
Post edited July 15, 2018 by Kamm28
I recently got Arcanum, downloaded it and the various patches described (and linked) on this thread, I had no problem running the game under Windows 10, 1920x1080p resolution.

Thanks to everyone for making all the information and files available!
High res patch works on win 10 but you have to disable g-sync (tested with latest stable version of ddraw compat)

https://github.com/narzoul/DDrawCompat/releases
Post edited August 23, 2018 by MyFeetHurt
FYI folks: The terra-arcanum.com links work if navigated to manually...
I seem to have run into a problem. I can't get the HighRes 1.5 patch to work, it keeps throwing back errors of needing Arcanum version 1.0.7.4 when I have the fully updated version of it. Maybe I should install via the original disks instead of GOGs 2.0.0.15 download. or maybe just do a fresh install delete saves and everything and try again?
I have played game a long time ago, wiht hi res patch, and I see now that patch alone have been updated.

I have instaled base game, than unofficial patch, than hi res patch.

whatever I do in configuration file, i get the same output. Always 1280*720, and image is streched. (I have entered 1920*1080)

HELP!

EDIT: I have find the solution.

1. uninstalled HI RES patch
2. than edited config file
3. instaled again
Post edited November 26, 2018 by p1630n
If anyone has problems right now downloading from Terra Arcanum: add www. before the URL that the site gives you for the download.

Example:
http:// terra-arcanum.com/downloads/grab/BLAHBLAH.hash
should be
http:// www.terra-arcanum.com/downloads/grab/BLAHBLAH.hash
Post edited January 10, 2019 by Links
avatar
Links: If anyone has problems right now downloading from Terra Arcanum: add www. before the URL that the site gives you for the download.

Example:
http:// terra-arcanum.com/downloads/grab/BLAHBLAH.hash
should be
http:// www.terra-arcanum.com/downloads/grab/BLAHBLAH.hash
Thank you so much. This worked perfectly for me.
avatar
Links: If anyone has problems right now downloading from Terra Arcanum: add www. before the URL that the site gives you for the download.

Example:
http:// terra-arcanum.com/downloads/grab/BLAHBLAH.hash
should be
http:// www.terra-arcanum.com/downloads/grab/BLAHBLAH.hash
Thank you, worked
Hey, I figured something out that people probably already know about, but I've seen some people ask about it in the past. Here's how to rollback on GOG patches, which I've never seen explicitly states anywhere. Maybe this will help somebody out who is dealing with Arcanum.

To roll back a patch on GOG Galaxy go to Arcanum's launch page and next to it will be a button that says MORE v

click that, go to Settings which should be the second one down

under Override Features uncheck [ ] Automatically update to newest version

a new set of options will appear called Version

and then there'll be

1.0.7.4 hotfix
1.0.7.4
27075661

Arcanum almost never gets updated, but the hotfix goofed up my install. so it's probably a good idea to leave Auto-updates off for the foreseeable future.

Enclosed is a visual aid. HTH!!!!!
Attachments:
I have tried every way to install this mess And it doesnt work. I have the patch installed no trouble. I install the high res patch and hit play and it just starts and stops. No window or anything. I think this fix is not working anymore.


I got it working . I use Galaxy I cant launch from there. I launch from the folder and it works fine. Maybe adimn rights problem?
Post edited May 09, 2019 by smuggly
avatar
smuggly: I have tried every way to install this mess And it doesnt work. I have the patch installed no trouble. I install the high res patch and hit play and it just starts and stops. No window or anything. I think this fix is not working anymore.

I got it working . I use Galaxy I cant launch from there. I launch from the folder and it works fine. Maybe adimn rights problem?
I have same problem. I installed High Res patch and then it doesn't work with GOG Galaxy.
But for me it also doesn't work when I try to launch from the folder :(
Any ideas?

Edit: Yeah! Now it works! I didn't know that Unofficial Arcanum Patch is required :D
Post edited May 12, 2019 by lord-ondrii