When you say SA:MP what type of server? DM or RPG?Well, the server I have coded has 5 game modes in it, in other words, 5 gamemodes in 1 server. They all act as different servers. That way players don't have to leave the server at all. The game modes: World War Two Total War(mainly TDM, but it takes time to unlock all features(no one has locked all of them), there are dogfights, tank battles and more), World War Two Time Line(best and the most heard battles of ww2, such as D-Day, battle of Stalingrad, Battle of Britain, dogfights .. for example 50 planes vs 50 planes.. well we never reached that many players.. but that would be epic), Stunt and Fun(minigames and stunt maps and fun..), Free For All & Gang wars(you can join a gang or create a gang to fight with other gangs.. or you can work alone.), The Coppers(cops vs criminals, cops must arrest all criminals before time runs out, criminals can release their team mates which makes the game harder.), and lastly The Godfather(this is the RPG one, I haven't really worked on this since 3 weeks.. it is not finished yet though.. I need some inspiration :D).
Welcome by the way!