Your game is quite reach in visuals!
Currently content is partially supported. You have to copy the xnb files into the '\wwwroot\Content\ folder and add a mime type for .xnb files as ‘application/octet-stream’ on the server.
Effects are supported as well but only SM 2_0. Perhaps you build them for DX or a higher shader model. Hopefully, if they are not that complicated, you could change them to SM_2_0.
SpriteFont.Characters has been removed. SpriteFont.Glyphs returns a new type ‘GlyphCollection’ which is a IDictionary<char,Glyph>.
The new version, 3.8.9101, now supports DXT3 compression.
Also the bug with SoundEffect Volume has been fixed.
You should also expect a big boost in SpriteBatch performance.
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