The safest and most reliable way to play "unblocked" Minecraft is through .
or 1.8.8 in a browser. It supports both singleplayer and multiplayer and is widely available on various unblocked game sites ClassiCube play minecraft free unblocked
One of the most popular ways to play a full version of Minecraft in a browser is through Eaglercraft. This is a web-based port of Minecraft 1.5.2 that runs on HTML5/WebGL. The safest and most reliable way to play