Minecraft for Mac is a time-sucking, mind-bending, and sleep-depriving experience. It hits the right tune on the subject of creation: it really does provide building blocks for your imagination.
Minecraft has no real direction, anchoring plot, or specific guidelines. Players are dropped into a world with only the ability to carve out resources from the surrounding land.
The game's outdated graphics won't really distract you from the game's core focus on building. Soon you'll find out that as it gets dark, lounging around with a pickaxe probably won't do you any good against the pixelated zombies, monsters, and other creepy critters after you.
Minecraft's central focus is in crafting tools and collecting resources to build just about whatever you want. Whether it's crafting more powerful weapons to fend off creatures of the night or building that mega fortress to mock other miners in the open world, you're still going to need the precise raw materials. Make no mistake: this game is a grinder. But after toiling for hours and hours, finally stumbling upon that precious material you need is a priceless moment in its own right.
Don't rely on Majong's limited provisions to learn the ropes of the game. Instead, I recommend scouting the Net for community made guides: there's a plethora of custom guides out there that will help you get the most out of this game. And really, that limit is all up to you.
If you simply want to focus on building and avoid the hassle of defending your fortress, then Creative mode is for you. In this mode, you have unrestricted access to all the building blocks and tools needed to build the structure or statue of your dreams -- plus the ability to fly for kicks.
If you're uncomfortable with lack of direction, then this game isn't for you. But when it comes to open-world gameplay and mechanics, Minecraft is a primitive but fine demonstration of thriving on bare-bones gaming. Grab an ax and start digging.