Author: gothick
Extension Description: CAPTCHA extension that uses the new tickybox-style reCAPTCHA 2.0.
Extension Version: 0.1.1
Requirements:
- Needs reCAPTCHA site and secret keys to be configured.
- Requires curl (or https stream wrappers working on file_get_contents())
- Requires the ability to reach the reCAPTCHA servers (url: https://www.google.com/recaptcha/api/siteverify) from your phpBB server.
- Requires JavaScript—there is no non-JavaScript fallback for reCAPTCHA 2.0, as far as I can tell.
- Use the interesting new reCAPTCHA 2.0 anti-spam as a standard CAPTCHA plugin.
- Supports prosilver and subsilver2 styles
- English, Russian, French, Japanese, Italian, Dutch, Traditional Chinese, Brazilian Portuguese, Ukrainian and German language translations. (Thanks everyone!)


Extension Download: ZIP: https://github.com/gothick/phpbb-ext-re ... ptcha2.zip
This has now been in use on a few live sites and has reached release candidate status.
All feedback welcomed. For specific issues, you may want to raise an issue on the GitHub repo.