Games can let players experience the joy of doing good deeds, to encourage them to re enact them in real life! In Alba: A Wildlife Adventure every action in the game contributes to improving the ecosystem and the joy of its inhabitants.
This strategy is even more useful when combined with a call to action in the real world, to avoid the risk of players being gratified by virtual satisfaction. The idea is to encourage people to act in the real world even after playing the game.