What is the fastest, easiest and most simple process to make a micro game?

mini game you say, a 2D side scrolling game the game mechanics and the amount of programming required is practically 0…arcade no items no inventory all static pers button run BP jamp pers button run BP shot up down left right pers button run BP trow granate
you can assemble a 2D side scrolling from 3D assets you have from the marketplace since the camera is fixed on one side you can go very heavy with the effects and poligons