According to Rovio Angry Birds Heikki, new title from popular Angry Birds game is available only for Desktop Users On Web. It was rumored that it would be available for mobile users also but Rovio made it avaialble for Web Users only. Here are some minimum requirements for playing Heikki: The game requires Flash 11 to run. Flash 11 has its own requirements.
Windows:
2.33GHz or faster x86-compatible processor, or Intel® Atom™ 1.6GHz or faster processor for netbooks
Microsoft® Windows® XP (32-bit), Windows Server® 2003 (32-bit), Windows Server 2008 (32-bit), Windows Vista® (32-bit), Windows 7 (32-bit and 64-bit)
Internet Explorer 7.0 and above, Mozilla Firefox 4.0 and above, Google Chrome, Safari 5.0 and above, Opera 11
1GB of RAM; 128MB of graphics memory
Mac OS:
Intel Core™ Duo 1.33GHz or faster processor
Mac OS X v10.6 or v10.7
Safari 5.0 and above, Mozilla Firefox 4.0 and above, Google Chrome, Opera 11
1GB of RAM; 128MB of graphics memory
Linux:
2.33GHz or faster x86-compatible processor, or Intel Atom 1.6GHz or faster processor for netbooks
Red Hat® Enterprise Linux (RHEL) 5.6 or later (32-bit and 64-bit), openSUSE® 11.3 or later (32-bit and 64-bit), Ubuntu 10.04 or later (32-bit and 64-bit)
Mozilla Firefox 4.0 or Google Chrome
1GB of RAM; 128MB of graphics memory
Guys head over to here to play new version of Angry Birds, heikki.