No real motive other than to improve myself in coding and OOP. Plus it's a canon event in every coder's coding life.
Running main.py should start the program, into the start screen, where you can choose different themes for different aspects of the game (including a fun, but questionable one at the end).
After selecting the desired theme, press the spacebar to start the game, avoid pipes, and press spacebar again to boost yourself upwards a short distance.