Lemonade Tycoon is one of the best games I’ve found for the iPod touch/iPhone. Surprisingly, its free!

You start out with a humble lemonade stand, in the suburbs, and by the end of the game have a $10,000 lemonade castle. But its the section in between that really makes this game worth it.

At the start of each day, you are presented with the current weather, and temperature. You can adjust the price per cup of your lemonade, buy the necessary supplies for the day, and tweak the recipe to maximize customer satisfaction. If you put in too many lemons, it will be too sour. Too little, it will be too watery. Same with the sugar.

Like I said, you start in the suburbs. As your popularity grows, you’ll make enough money per day to rent other places to sell your lemonade, like the Park, Downtown, The Beach, and more. You’ll also be able to buy upgrades, like a neon sign, which boots your visibility.

Once you unlock the Ball Park, and have the $10,000 lemonade castle, the game doesn’t have much more for you. But overall, this game is a great time killer, and is definitely worth downloading.