Do not assume you already know this machine
Starlight Princess sits on a six by five board with thirty symbol positions and no paylines, and if you have played other pay anywhere titles it will feel instantly familiar. That familiarity is a trap. Games that share a family resemblance do not necessarily share their feature rules, and the differences tend to live exactly where the money is: in how multipliers are applied and what happens to them between spins.
So the first instruction for this machine is unusual but important. Before you spin, open the info panel and read the feature pages properly, as though you had never seen a tumbling grid before. Whatever you remember from a sibling title is a hypothesis, not a fact, and the panel in front of you is the only thing that settles it.
The demo makes this cheap. Virtual credits, no deposit, no account, nothing to withdraw, and as many spins as your patience allows. Use that freedom to verify rather than to guess.