There’s not a lot to FluidSimulation; it’s very simplistic. But it’s a good simplistic style that the devs pulled off well. And I mean, it’s a free fluid simulation app. What can you expect?
With that mindset established, I think this deserves 5 stars. Not only are the physics pretty nice, but you can toy around with them in the options menu. From speed, to lighting, to viscosity, and even resolution, there’s a lot of different combinations to keep you interested (not limited to what I listed).
Now, there are locked features that require real money in order to access, but I love this game for what it is, even without making that purchase. Why else would I be writing a positive review? It’s the least I could do. If you’ve spent this long reading over the customer responses, you might as well try it out for yourself. It can’t hurt and it’s a lot of fun.