I have Minecraft, it's very good.
For those that don't know; it's a sandbox survival game. You're plonked into randomly generated landscapes completely made out of blocks including forests, deserts, taiga, jungle etc and can build anything you like, though you need to acquire the resources by breaking blocks in the world, ie. wood comes from cutting down trees, iron ore to be smelted is mined underground. When night comes, monsters appear, this along with the hunger bar and natural dangers is the survival aspect. You craft all the equipment you use such as axes, mining picks, shovels, swords, bows using resources you find. It's a very deep game and a lot of fun.
You'd start a typical game by harvesting resources to build a house so you'll be safe at night, then acquire food, either by hunting wild animals, farming, foraging, and then exploring/mining for the more desirable resources to make better equipment and build bigger and better things. You do need to give yourself a building project to keep at it, though the survival aspect alone is fun in itself. There is an 'objective' to the game too which I won't go into.
The whole "oh it's game about going outside and doing outdoorsy things when you could do it for real" comments confuse me a bit. The same thing could be said about almost anything on TV. Watching football rather than playing it for example. It's just entertainment.