code: def make_game():
    
    return ascii_art.ascii_art_to_game(
        GAME_ART, what_lies_beneath=' ',
        sprites=dict(
            [('P', PlayerSprite)] +
            [(c, UpwardLaserBoltSprite) for c in UPWARD_BOLT_CHARS] +
            [(c, DownwardLaserBoltSprite) for c in DOWNWARD_BOLT_CHARS]),
        drapes=dict(X=MarauderDrape,
                    B=BunkerDrape),
        update_schedule=['P', 'B', 'X'] + list(_ALL_BOLT_CHARS))
docs: Builds and returns an Extraterrestrial Marauders game.