Ok game for quick round, however getting all features will take time.
To get unlimited money (gems), do the below:

1. Open the game at least once ( your remaining money)
2. Close the game
3. Open Registry Editor
4. Under HKEY_CURRENT_ > Software > Yabukaradoo > NejiSim5
5. Right click ‘GemKey_h’
6. Click ‘Modify’
7. Look at the number at the very right, which should be your current remaining money in game. Which should be end with dot.
8. Change that number to whatever you like, it will become the money that you are able to spend.

Have fun.