Game with placeholder data

Prepare a working prototype with the following placeholder items:
- display resolution of 1280x720 pixels
- text display
- textual options
- random number generation
- boolean variables (and text dependent on those)
- "for" loop for using the same sequence many times
- background image display and change
- foreground image display with the image moving from the bottom of the screen
- sound playback
- looping music playback, fade-in/out, stop
- solution for fullscreen display of credits (e.g. in a form of a background image)

Prepare for a showcase using some kind of a remote desktop.

Notes:
Use RenPy 6.15.7 (the latest stable version).
Use some random placeholder/generated assets, don't put those into the project branch.
Important! The game engine (RenPy) files should not be put into the branch.