I don't know if this is a scam or not, looks worse and worse the longer the dev doesn't come online.

But your comment.  "Isn't it funny how if you go back and look at the history, about half way in the developer stopped replying to anyones comments and only posted updates on the amount of funds invested in the IPO?" is clearly bullshit

https://blockchain.info/address/1LDKa5i4qxzvQNoQpwU5es3aq9c95ooSFg
44.08836809 BTC

+

https://blockchain.info/address/1Bi6iU52aDecVy25TmrqU7VqB8yJhYWW5p
14.81067596 BTC    (-0.22 BTC)

=

58.679 BTC (24 000 $)

IPO

https://blockchain.info/address/1LDKa5i4qxzvQNoQpwU5es3aq9c95ooSFg
49.91591109 BTC

+

https://blockchain.info/address/1Bi6iU52aDecVy25TmrqU7VqB8yJhYWW5p (Escrow)
16.85067596 BTC (-13*0.02 BTC)

=

66.50658705 BTC (26 700 $)

IPO

https://blockchain.info/address/1LDKa5i4qxzvQNoQpwU5es3aq9c95ooSFg
60.36401109 BTC

+

https://blockchain.info/address/1Bi6iU52aDecVy25TmrqU7VqB8yJhYWW5p (Escrow)
17.37067596 BTC (-14*0.02 BTC)

=

77.45468705 BTC (35 100 $)

Remaining 32 hours.

100 or slightly less.

IPO

https://blockchain.info/address/1LDKa5i4qxzvQNoQpwU5es3aq9c95ooSFg
72.47781109 BTC

+

https://blockchain.info/address/1Bi6iU52aDecVy25TmrqU7VqB8yJhYWW5p (Escrow)
26.17167596 BTC (-23*0.02 BTC)

=

98.18948705 BTC (51 750 $) ~114 investors.

Remaining 6 hours.

IPO

https://blockchain.info/address/1LDKa5i4qxzvQNoQpwU5es3aq9c95ooSFg
75.13363577 BTC

+

https://blockchain.info/address/1Bi6iU52aDecVy25TmrqU7VqB8yJhYWW5p (Escrow)
31.63146596 BTC (-27*0.02 BTC)

=

106.22510173 BTC (53 100 $) ~121 investors.

Remaining 3 hours.

IPO was completed!

https://blockchain.info/address/1LDKa5i4qxzvQNoQpwU5es3aq9c95ooSFg
79.48075998 BTC

+

https://blockchain.info/address/1Bi6iU52aDecVy25TmrqU7VqB8yJhYWW5p (Escrow)
47.97329938 BTC (-35*0.02 BTC)

=

126.75405936 BTC (63 300 $) ~135 investors.

And refunds are coming.