Stacking blocks that are painted differnetly and fighting cardboard cutouts of monters.
bloxorz is a fun game
ubi world
Runescape is somewhat like world of warcraft, though it is not a complex, it is free.
eyezmaze.com
Silkroad or Runes of Magic.
There are games similar to Roblox, but none of them are free. You may want to try Runescape or World of Warcraft.
www.eyezmaze.com jahsjvkhaxjkvdhkajxhvjkahxkjdfbavnkxnbvjka
Maplestory, World of warcraft (now that it is free to lvl 20)... games like that
I doubt there are any games like that, unless metaphorically you mean that the real world is a game itself. All games must require some kind of space or unit it is made out of..
There are plenty of games like minecraft for free, like infiniminer and manic digger.
Like any other RPG/MMORPG
fate and warhammer onlinemay i suggest runescape the free online game
There are a lot of games that are like World of Warcaft but free. Most of them don't stay around very long, or have their player-base so low that the game is not viable.