У вашего броузера проблема в совместимости с HTML5
Green Grove Remix by Karl Brueggeman (https://www.youtube.com/watch?v=eozNdsQc4EM)
Sonic Islands is an attempt at recreating the physics from the classic games in 3D, while trying to incorporate elements found in the modern games. Starting with only Sonic's base moveset, you'll find new abilities hidden throughout the zone.
Islands is a more acrobatic, slower take on Sonic gameplay; incentivising exploration and free-flowing movement over covering large amounts of ground.
The engine powering this build is an incredibly early version, with a complete overhaul happening soon.
SAGE 2018 DOWNLOAD LINK: https://sonicfangameshq.com/forums/showcase/sonic-islands-sage-2018-demo.212/
Mirror (Regular Build): https://t.co/ET2cUDKte2
Mirror (Low End Build): https://t.co/B48S5dEHhT
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Twitter: https://twitter.com/SteveTGames