I think that information posted by TeyNinja is outdated. I checked my Freebitco.in account and I have to depisit 0.00825801 BTC t play without captcha. But I got much more from free rolls than 0.008 BTC.
The ideal would be to ask in the FreeBitcoin thread managed by TheQuin:
https://bitcointalk.org/index.php?topic=319540.0No, it's not possible. Freedoge.co.in have very limited features compared with Freebitco.in. Eventually it will be merged with Freebitco.in.
This possibility has crossed my mind later.