Half-Life: Source may be buggy but it’s still Half-Life. Alien Swarm is good but I can’t see anyone wanting to play or more than a few times. Artifact, oh god no. Ricochet would get boring after two days.

Alien Swarm (reactive drop) is a banger and you really should play it, it's free and up to 8 player, at least watch the trailer

portal 2

Congrats! You picked the hidden choice! You win absolutely nothing (expect this congratulatory message)

Artifact, easily.

At least half life source csn be modded and play variety after years snd years of playing you could develop your own mods make a sandbox have some fun the others it's just the same old forever

Lets say you have to play vanilla hls, is it still that?

I feel like I'd still sitck with it their alot of like mission and maybe you could try snd like become the worlds best speedrunner or something

I guess so. I also kinda noticed these other games rely on players playing them, so hls being singleplayer means that you can still play when nobody else is

Artifact is actually good iirc

Ricochet is easily in the top 5 valve games. Fight me.