If you are looking for the classic "flat" experience, the (which includes the original, Seasons , and Rio) was released physically for PC years ago.
: Many third-party "abandonware" sites bundle installers with adware or malware. Always run a virus scan on any executable (.exe) file you download from a non-official source. Angry Birds Download PC Game
While the original 2009 version of is no longer officially available for direct purchase or download on PC via Rovio, you can still play the series on your computer through modern remakes and official storefronts. Official Ways to Play on PC If you are looking for the classic "flat"
: You can often find used physical discs on marketplaces like eBay or Amazon. the (which includes the original