Gold star appear in all games of Wonderland (Not counting original Wonderland (Game) ) Its greatest thing in games! To complete level, you need found it, and then grab. In Wonderland: Secret Worlds, you first need found all Coins to unlock Gold Star. In other games, (Wonderland Adventures series) you have unlocked Gold Star from start.
In all games is Gold Star yellow star that turn from left to right, from right to left etc... thats all.