The game saves the village automatically every day. If you want to revert to a previous day or lost your village for any reason you can use the following hidden feature: Start the game, select Options from the main menu and tap Papa Smurf 16 times (not the "Restart Game" feature next to his icon). After the 16th time a new option will be available in the bottom right corner called "Recover Village". Select it to find a list of saved games.
Miner Smurf's Minigame
When playing this game, if you find a diamond you can keep using the rock for the same diamond until it appears as coal. The diamonds are normally near the edges of the screen or in the middle.
If you are sick of waiting for crops to grow, head to the Settings menu and choose "General." Now, choose "Date and Time" and turn off "Set Automatically" and then change the time for your crops manually. Note: You can get away with this exploit about 20 times before some Smurfs leave.
Unlock Additional Paint Colors
After unlocking Painter Smurf (using 30 Smurfberries), you will be able to paint the roofs of huts, fences, benches, bridges, etc. At first, only the first three colors will be available (Blue, Red, and White). To unlock the other colors, simply play the Painter Smurf's minigame and complete all the pictures with at least a "close to perefection" ranking.
Brown - Complete an image of a Lamp Post.
Dark Blue - Complete an image of some Mushrooms.
Green - Complete an image of Smurfette.
Gray - Complete an image of a Well.
Maroon - Complete an image of a Smurf Hut.
Pink - Complete an image of Papa Smurf.
Sky Blue - Complete an image of some Flowers.
Violet - Complete an image of a Cake.
Yellow - Complete an image of a Gift Box.