Reminds me a little of this Flappy Bird demo which makes use of DataScript's Datalog rules https://frankiesardo.github.io/minikusari/#!/minikusari.tuto...

> inbuilt data structure of the language and looks like this: [1 2 3]

array / vector

> construct side effects which I call 'transactions'

setting a variable

> where :tx/foo is a keyword

variable or hashmap

> uniquely identifies the component behaviour

running a function