Isn't there min bet for BTC actually 0 Satoshi's. Basically you can bet 0 and basically if you win you get nothing and if you lose you lose nothing.

So the low min bet for Doge isn't too much of a surprise.

I remember I had a strategy I tried for fun. Basically rolled like 2 or 3 winners on the 50/50 dice, and then just set my base bet to 0 and rolled again hoping it would be a loss and I would lose nothing and then again I would go and return to the base bet.

I think this is actually the reason why they allowed betting on 0 Satoshis, since it really doesn't benefit the site in any way but the roll actually does get processed.