When I first checked the Past Auctions, all of them had either no players, or just one. That's a pitty, I think this game will only be fun once a few people join and bid against each other. I like the concept. The more people join, the bigger the prize gets!

Thoughts

• I can't "double click > copy" the Bidding address, because there's a link under it. Can you add a 1-click "copy" icon?
• To stop games for taking forever: how about the 144 blocks between the last bid and the end of the auction decreases by just one block for each bid? With the exception that if 2 bids are made at the same time, that still only reduces it by one block (to prevent someone from dropping it to zero instantly by making 144 bids). For most bets, it won't matter, but at least it will give each game a hard upper limit in duration.
• Bidding the exact same amount as the previous highest bid may work to "settle" a bidding war into 50-50 (or 49-49 after the house edge) prizes.
• Do you have to bid from the same address to raise your bid (either by using another input from the same address, using the sending address to return the change to, or by funding it from another address)?
• What happens if someone uses more than one sending address (in one transaction)? Do you randomly pick one? I think this is important to know when someone wants to raise their bid.
• The required number of confirmations (5) is still quite large for penny amounts.

Game 32
I joined Game 32 (should it be called Auction 32?) with 0.00004779 BTC, after a few other players joined. My deposit with 0 confirmations was instantly added to the list of Participants (but not to the total Prize yet). After a few confirmations, everything looked as expected.


At first, only the winning addresses were shown on the leaderboard. I would have expected all transactions to show up, that can be especially useful if someone's deposit is already beaten by someone else before it had 5 confirmations. This was updated already before I posted my review. Follow-up question: can you highlight the current highest bid(s)? And how does it show it if one address made multiple deposits?

After someone bid 1 sat more than my bid, it gave me the chance to see if I can raise my existing bet by depositing 0.00000666 BTC again from the same address. I t hink the amount is added to the total prize, but my Bid wasn't increased (after 40 confirmations). My guess is this is not the intended behaviour.