Game not installed
Replace core.dll in Optical Drive:\System with the one from my archive. You will need to place the disc contents in a folder somewhere.
Game already installed.
Replace core.dll with the one from my archive C:\Program Files\Groove Games\Marine Heavy Gunner\System
https://drive.google.com/drive/folders/ ... sp=sharing
Source: https://rutracker.org/forum/viewtopic.php?t=5031466
Credits to KRBDZSKL
I used this release "ISO Demo 377MB (uploaded by Meddle)"
https://www.legendsworld.net/shooter/game/1573
I believe the fix should also work in Windows 7, but I havent specifically tried this.