mass game 2018 – 70th Birthday Sizes: 150 × 150 / 300 × 200 / 768 × 512 / 1,024 × 683 / 1,536 × 1,024 / 2,048 × 1,365 / 175 × 131 / 750 × 500 / 300 × 300 / 600 × 400 / 100 × 100 / 2,560 × 1,707
