Honestly, the downloaded versions are better: WebGL is a fucking buggy mess, and these are *big* games.
I managed to squeeze most of Love of Magic's first Act into a WebGL version here:
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It'll give you some indication of the underlying issues with WebGL:
- Long initial downloads (though if I'd built it from day one for WebGL I could have traded that for more background loading)
- streaming things (music, video) is asynchronous, so it will initiate download only when referenced. Often means the music starts 2-3 beats after it's supposed, or that a clicker can skip past the video.
- WebGL audio in general sucks.
apart from that, you can check out Gamecore; that's likely the other really big online site.