Cube Engine 1 and 2 touted as the smallest (in terms of file size) FPS Multiplayer game. It's also free. Unknown if the community is still booming as I have not played it in a long time. Eh while we're at it there's also Warsow but this one I know the community isn't as great as before. Source: about 1 year ago

I'd you want something a little more advanced but straight forward I highly suggest Warsow. It's a free first person arena shooter that plays very much like Quake. Source: about 2 years ago

Warsow is also quite good and very close to late 90's shooter's idea of multiplayer https://warsow.net/. - Source: Hacker News / about 3 years ago

Playing games is part of who we are as humans. Ditto for making games. From Nine Men Morris to Shattered Pixel Dungeon, Mindustry, and Warsow, people have been making and playing games for free. We don't need a games industry in order to have games. Source: about 3 years ago

Try logging into your account on hirezstudios.com. Source: over 2 years ago

Any time I've ever had a problem with anything like this I just sent in a support ticket on hirezstudios.com and had it fixed almost immediately. That's what support tickets are for. Source: over 2 years ago

You should be able to unlink it via your account page on hirezstudios.com. Source: over 2 years ago

Sure just visit hirezstudios.com and create an acc. When you did that, click on linked Accounts and link your Switch and Steam account :). Source: almost 3 years ago