First off, Visit I'm a starred user and I used to have 'Trusted', now i'm a 'Lua helper', give me a PM sometime if you need help.Basically CS:S is widely used. The rest is just a bit of fun to dick about with in single-player, unless a server specifically has those props mounted, Like TF2, but that's rare.Some maps like RPevocity use episode2 textures, and certain ones at that.Depending on the server, you may need to download Weapon, car, prop, stool, other shit from the workshop and it'll do it for you and you can use it offline later.But some servers still use legacy-style (Copy/paste a folder into addons), but they're very specific and tell you anyway.