In SSMS II, You can make your own town like the original, however did you know that you can get more options for buildings and more plots to work with?

To do so:

You will need to build the Garden Shop. They sell seeds which give out items. However there are secret seeds which can only be sold after talking to a specific NPC in one of the buildings in the town. After talking to the specific NPC who gives out the info, choose to sow seeds at the shop and choose the invisible option to get the Secret Seeds. After getting the seeds and planting them, you get 2 more building plots and more kinds of shops: (This does however make you unable to sow seeds afterwards.)

Doctor's Office: Pay an amount of money and you have a chance to level up automatically. Has a high chance of failure though.
Sound Test: Hear the music from the game
Tool Shop: Sells items cheaper than other shops
Quiz Hall: Answer questions to get prizes, if you answer all the questions right, you won't be able to do the quiz anymore.

If you want quick Gemstones to make buildings, One of Kupikupi's spells can turn enemies into Jewels and a Merchant will sell Jewels in the Bar.