In trash B. warrior!, the world of trash you the player has to clean up the trash on all the ground that reflects them. The game's art and environment reflects the theme by making it dirty and have trash all over the ground and you have to clean it to make the environment better. The players actions and challenges that reflects the theme is the ability to do anything if they wanna leave the place dirty they can but that would leave a negative impact.
there a lot more.. butt i think yall get the picture