Online play for GTA:SA has been available for years (there's either MTA or sa:mp). Used to admin a really good RPG server for sa:mp called Chillpoint (www.Chillpoint.Nl) though after the main coder disappearing and no new updates it was eventually taken down. It prob had all the features you would want from GTA online - classes, gangs, props/businesses, animations and all kinds of commands)
You can see most of the vids I took from there at DarkWolfAS profile on youtube or search for Chillpoint. Shame it's no longer around, dunno about about the other servers if they're up.
Few of us are starting to code a new server that's not related to Chillpoint on a special online mod for GTA:SA that still runs through samp called GTA United. Search for it online. The mod replaces the SA map with both LC and VC. As it uses the SA engine it includes all the player/vehicle mods and some interiors from SA.
When the new server is ready we'll be looking for new players if you wanna join us. Will take a little while to get the classes and features coded, but hopefully not too long.















