Easy to implement yeah??
If I saw how much time they need.....
Well, then they aren't really good, as it really isn't that hard.
I know a server where you can create your own minigame, it is like creative but then you can code it too. It is very easy with putting blocks down like "if player hits another player, then.." etc... This scoreboard would be 5 minute work in there...
All coded by only the owner... Well, how far is Cubecraft then, if they need ages to do it...
Sure, that boy can code, but CubeCraft is about 80-100 times as big as that server... I'm sure this shouldn't be a big thing..