Please i bought this from GOG. It crashes and strobes on the Nox screen right after the intro. I really want to play this game and GOG is usually pretty good about finding fixes but i'm not finding a lot like my problem. Please comment ay ideas for fixes you have.

I don't know how you could resolve this, the game working normally, here.

Have you contacted support yet?

I'm having a similar problem. I have the flashing screen, but instead of crashing the screen is frozen. Stuck on Nox, flashing, but i can hear the menu screen and if I move my mouse I can hear it touching the various options. But frozen solid

Check the other posts in the forum. I had the exact issue happen to me and followed this post:

I am running Windows 10 with a very low spec PC. My screen displayed a persistent flickering title screen, but didn't crash. I could move the mouse around and hear sound effects. The readme.txt file mentions a compatibility mode reset in the start menu. This solved my problem.

Method 1 using GOG Galaxy launcher
1. Click Nox shortcut from the start menu (It looks like an ordinary shortcut and does not say compatibility.)
2. Click "Run Program" button.
3. Don't skip company logos. (Some programs secretly load data during this time & will fail if skipped occasionally)
4. Don't skip cutscene (Sometimes this causes sound card issues.)
5. Use quit button to exit game.
6. Now click "Play" from GOG Galaxy launcher
7. Repeat steps 3 & 4.
8. Click New or Load game & have fun.

Method 2 manual compatibility option
1. Locate Nox.exe (Don't confuse it with the shortcut)
2. Right click then select properties
3. Click compatibility tab
4. Select Compatibility box and select Windows 98
5. Click ok
6. Double click Nox.exe (I don't hide my file extensions, but yours may be hidden.)
7. Don't skip company logos. (Some programs secretly load data during this time & will fail if skipped occasionally)
8. Don't skip cutscene (Sometimes this causes sound card issues.)
9. Click New or Load game & have fun.

Operating System: Windows 10 Home 64-bit (10.0, Build 18363) (18362.19h1_release.190318-1202)
System Model: Inspiron 3275 AIO
BIOS: 1.7.0 (type: UEFI)
Processor: AMD E2-9000e RADEON R2, 4 COMPUTE CORES 2C+2G (2 CPUs), ~1.5GHz
Memory: 4096MB RAM
Available OS Memory: 3974MB RAM
Page File: 5570MB used, 1859MB available
DirectX Version: DirectX 12
Card name: AMD Radeon(TM) R2 Graphics
Manufacturer: Advanced Micro Devices, Inc.
Chip type: AMD Radeon Graphics Processor (0x98E4)
DAC type: Internal DAC(400MHz)
Display Memory: 2051 MB
Dedicated Memory: 64 MB
Shared Memory: 1987 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)

I finished the gauntlet and everything seems to be working now.

Totally Fixed the Issue for me, THANKS SO MUCH!