I have been playing this game for a long time now and have enjoyed every moment without spending a penny; yes it is possible. I love my little family & the other characters & have no trouble making free energy by cooking food and trading with the shaman and the trader. I even came first in two quests; yeah! I could complete some things faster if I spent money but there is plenty to keep me busy whilst preparing meals and goods for trade. I recomend you give this game a go' I really enjoy it.