Compatibility Report

• Name of the game with compatibility issues: Midnight Castle Succubus
• Steam AppID of the game: 1299320

System Information

• GPU: NVIDIA GeForce GTX 760
• Driver/LLVM version: NVIDIA Corporation GeForce GTX 760/PCIe/SSE2 (4.6.0 NVIDIA 450.57)
• Kernel version: 5.7.12-arch1-1
• Link to full system information report as Gist: https://gist.github.com/goakley/53ebd752551bbb1242c87aa2d2ff802a
• Proton version: 5.0-9

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

Symptoms

The game does not launch. The error appears to be related to one of the Visual C++ Redistributable DLLs:
Unhandled exception: unimplemented function api-ms-win-crt-multibyte-l1-1-0._mbscmp_l called in 32-bit code (0x7b00dd67).
I did a little investigation and the dll appears to exist in the compatdata folder, so there may be an issue with the dll in use or something else about the installation. Or there may be other errors I missed as a result of focusing on this one.

steam-1299320.log

Reproduction

Attempting to launch the game should cause a near-immediate crash.