Minecraft is celebrating its 10th birthday by making its Classic version easily playable on web browsers. You don't need to download any files to make it work, and you don't have to pay a cent for access. Since Classic was only the second phase in the game's development cycle, its features are pretty limited. You'll only have 32 blocks to work with, most of which are dyed wool, and it's strictly creative mode only. But who needs zombies, skeletons and other mobs when you have the version's decade-old bugs to contend with, anyway?