У вашего броузера проблема в совместимости с HTML5
Discord: https://discord.gg/dMMjgs
Poly Bridge 4-10: Flip Flop
Unleash your engineering creativity with an engaging and fresh bridge-building simulator with all the bells and whistles.
Enjoy hours of physics-based puzzle solving in the Campaign and then jump in the Sandbox to create your own bridge designs and puzzles.
Challenge friends and the rest of the Steam Workshop community to solve your puzzles and download more levels submitted by other players.
Poly Bridge Tutorial
Steam: http://store.steampowered.com/app/367450
Website: http://polybridge.drycactus.com/
Music composer: Adrian Talens