When I first saw the Pathos III game I didn’t join it because it didn’t really look like an SCP Game. Until I actually saw a video of it and I realised it was an SCP game.
You need to make the game more visible that it is an SCP game.
Ideas to make the game seem more SCP related:
Add Pathos III logo on the actual square game thumbnail.
Maybe add SCP in the game name.
Add Secure Containment Installation in the square game thumbnail so it appears more SCP related.
This is gonna be really controversial but what about just putting something that looks very SCP related (like something very scp vibe) on the game square thumbnail.