UnReal World is a combination of roleplaying game and a survival simulation. In a world inspired by iron-age Finland you can track animals, set traps, hunt with bows and spears, tan hides, go fishing, pick berries, cook food, sleep in a temporary shelter or build a log cottage, trade with the villagers, craft items, etc. It has a randomly generated map, skill development and a detailed wounds and combat system. The item crafting is moddable.
for Mac OS X. Full version free to play. A lot of bugs fixed and added options to command your pet dog.