The same board shape, a different rulebook
Fruit Party lays out a seven by seven board of fruit, and at a glance it looks like every other cluster game you have played. It is not. The multiplier mechanic works on a completely different principle from its cousins, and that principle is the whole reason to learn the machine properly rather than assuming you already have.
Before your first spin, open the info panel and read the feature pages. You are looking for two things specifically: what constitutes a cluster, and precisely when a multiplier counts. Get those two rules right and the rest of the game is straightforward. Get them wrong and you will spend the session confused about why perfectly good looking spins paid nothing.
The demo gives you virtual credits, no account, no deposit and nothing withdrawable, which is exactly the environment in which to spend ten minutes reading rules that most players skip entirely.