So this is the pc version of Sonic Mega Collection Plus, it works quite well for a port from a console. You will need "Daemon tools lite" to mount the game cd. I'll put a direct link here.
http://eu-uk1.disc-tools.com/request?p=a106b633a1489a503b2f7aa10bd13ecc/DTLit...
This Collection does have everything from the console version to my knowledge,
so you'll get all the games once you unlock them, I just don't play it that often.
Fraps made the game skip a little, it won't do that while you're playing.
And this is 15 parts.
http://www.mediafire.com/?n2slyi4ibn8nh69 Part 1
http://www.mediafire.com/?g7gzxxrh1ae8ono Part 2
http://www.mediafire.com/?efs4g7wlyb72zad Part 3
http://www.mediafire.com/?j36lk86khr4c69s Part 4
http://www.mediafire.com/?4rs9sj2546t8wbr Part 5
http://www.mediafire.com/?2vjr7ttc9b1tnb8 Part 6
http://www.mediafire.com/?y4u2s5f8n9ec6qg Part 7
http://www.mediafire.com/?hrb207x857t2r0u Part 8
http://www.mediafire.com/?w62twp76bq9f62a Part 9
http://www.mediafire.com/?tgkveu6ireunkjm Part 10
http://www.mediafire.com/?owcwsob044z7otq Part 11
http://www.mediafire.com/?mb2158hn5ne2pas Part 12
http://www.mediafire.com/?x8rrrylyrvm9x4y Part 13
http://www.mediafire.com/?66bv442tax2f64l Part 14
http://www.mediafire.com/?vgqf40f1biojcqj Part 15
I don't really know what else to say, besides as always if you have any
problems just ask and I'll help you out. Hope you enjoy