У вашего броузера проблема в совместимости с HTML5
https://www.smwcentral.net/?p=section&a=details&id=9033 After playing through this stage, you will hate dolphins with a passion. This stage shares some similar characteristics to the original Fish Styx, such as Message Box + Layer 3 puzzles. I also experiment with sprite tileset mixing as well (YY-CHR). I know the Kaizo trap at the end isn't exactly the most creative, but oh freaking well. OW Music: Megaman 4- stage Select Day: Megaman X- Octopus Stage Night: Siren- Bright Club Lane Styx part: Tyrian-Asteroid Dance