Hi,
From what i can see, you have this fsm on all 25 fields, If so what is happening is
that all fsm's are doing this at the same time.
You might want to set this up differently.
you can use an array and add your 25 fields in it, then you need a custom action from the
Ecosystem called 'iterate' to loop 5 times.
In the loop you get a random field from the array with "Array Get Random" then place it in a different array, call it 'ActiveObjects' for example.
and loop 5 times.
after the loop add the "mouse down" Action and on the next state have a mouse pick and store your game object, then use "Array Contains" on the 'ActiveObjects' to see if its one of the 5 objects, if it is you can use a random event to do a random animation.
Here you can find tutorials for these actions.