MySims Kingdom Edit
Simoleons are essences, and are not used as a type of currency, unlike the DS versions of the MySims series. It can be obtained in a variety of ways, one being from weeds. Pulling 3 weeds straight in Renée's Nature Preserve will earn you a few Simoleans, as well as pulling 4 weeds straight on Candypalooza. You can also obtain them by jumping on couches and playing the computer.