> Right now Unity games run in the browser via a plugin. The plugin installation is a single click, fairly transparent and doesn't require administrator access, but for the average user it's scary. Who trusts a plugin? It's reported as the number 1 turn-off for users.
1. This is still a plugin. NaCl uses the Pepper plugin API. That it is bundled in Chrome doesn't make it not a plugin (Chrome also bundles Flash, and that is still a plugin.)
2. The Unity3D plugin will at least work in multiple browsers, while using NaCl will only work in Chrome.
3. It is true though that, as you say, having a plugin pre-installed as in Chrome is less scary for users. However, it still has all the other problems that plugins have, and as mentioned that it is Chrome-specific.
1. This is still a plugin. NaCl uses the Pepper plugin API. That it is bundled in Chrome doesn't make it not a plugin (Chrome also bundles Flash, and that is still a plugin.)
2. The Unity3D plugin will at least work in multiple browsers, while using NaCl will only work in Chrome.
3. It is true though that, as you say, having a plugin pre-installed as in Chrome is less scary for users. However, it still has all the other problems that plugins have, and as mentioned that it is Chrome-specific.