Stray Pigs

Little pigs are on the loose and all lost. Help them to find their home.
This game is an arcade game to help little stray pigs coming from different directions
to find their own homes.
Note that don't make them bump on each other or the game is over.
Three types of pigs are appearing in the game and they have different speed.
You should consider that. You can move a stone by clicking a switch beside it so
that you can make a way for your lost pigs.
Try to drive your stray pigs to their home as much as you can and you will get scores
for the count of stray pigs arrived at home.
Have fun!