In 2019, at an internal company product sprint, a proposal was made to remove i386 support from Ubuntu. This was the culmination of plenty of discussion. This step would go beyond simply removing the 32-bit x86 ISO images from the build system. It meant no longer even building any i386 deb packages at all. This was announced a little while later, in June.
There was some internal and much external pushback, so a new path forward was charted and announced. The reason for pushback is that removing i386 packages from the archive would impact the ability to easily install and run 32-bit software on a 64-bit x86 install.
Requires the following packages to be installed: libc6:i386 libasound2:i386 libasound2-data:i386 libasound2-plugins:i386 libstdc++6:i386 libx11-6:i386 libxau6:i386 libxcb1:i386 libxcursor1:i386 libxdmcp6:i386 libxext6:i386 libxfixes3:i386 libxinerama1:i386 libxrandr2:i386 libxrender1:i386 libglu1:i386 This game comes with a 32-bit binary
The next two, libasound2-data:i386 and libasound2-plugins:i386 are related to the prior one, such that as long as you install lib32-libpulse you should be fine. If for some reason your program still has no sound look at, ALSA does not go through PulseAudio, and install: