Sonic 2+ Early Tails Flying Build

"So, A Friend Of Mine Told Me To Umm.. Check Out A Specific Build That He Gave To Me, This Build Takes Place After They Decided To Pitch This Idea To SEGA, It's Basically An Early Version Of The Tails Flying Ability From S3, They Probably Re-Used It For S3, But Im Not So Sure, This Was Before Sonic 3 Released After All (February 2, 1994), However, The Mechanic Is Still A Little Bit Broken, Because Of The Fact That They Were Still Working On It, Also After The Title Card For Emerald Hill Zone Act 2 Appears, The Game Suddenly Comes To A Halt, And A Error Message Appears, My Friend Told Me That This Was Basically Stolen By Another Person And Put On Sale, I Dont Know Why But I Mean It's Probably Because Of How Rare It Is, Maybe. But That's All, Also, Im Looking For The Full Version Of Sonic 2+, It's Probably Somewhere I Just Dont Know, But I'll Probably Look For Other Stuff Too, If Im Bored, See Ya." -Eric Erickson.