To make everything ready foe the game logic, I prefer building a quick particle system sample that will be displayed whenever the player correctly touches a fruit object. Building a particle system involves different steps starting with building a material for the particles, building the particles themselves and finally, spawning the particles. Let's start with the two main steps first and leave the spawning step until we reach part in the gameplay logic.
Add a new material to Content Browser and name it particlesMaterial, then double click to open the material editor. Select its base node and set Blend Mode to Translucent and Shading Model to Unlit. With these two options, you will find some of the inputs the material has disabled as we will not need them with a typical particle material.
Now you can add the RadialGradientExponential node to your material grid, which will be responsible for showing a radial gradient shape (small particle shape)...