You have to be fastest of all 5 races.

0.05 BTC for the fastest coin of the next 5 races (Race #463 to #467).
Precondition: Post the transaction id of your payment here! In case of same speed first post wins.

Click here to join

True 

It is not very attractive to play for others if one player paid a huge amount and had good luck with a very fast payment.
On the other hand it prevents players that played a huge amount with bad luck and a slow payment from loosing almost all coins.

The number of games per transaction (payment) was reduced from unlimited to four.

Due to the change from one payment address for all players to personal payment addresses for each player, coinrun is now compatible with any wallet. There is no risk anymore by using wallets which can't receive bitcoins with the address which was used for sending (shared wallets). All you need to play the game is your own bitcoin wallet address.

See more at http://coinrun.bits2win.com

see http://www.reddit.com/r/Bitcoin/comments/1ocqtb/coinrun_now_compatible_with_any_wallet/

Today is a good day to play!

See FAQ:

How is the speed of a coin calculated?
Every transaction has a time when it was first seen in the network (timereceived) and a time when it was included in a block (blocktime). The difference between those two timestamps is calculated as a laziness factor. The higher it is (the more time a payment needed to be included in a block) the slower is the coin. The least lazy coin in a race wins the biggest part of the pot. If there are two or more coins with the same laziness in the same race, the alphabetical order of the transaction id decides which coin is faster.

At least its a bet if your payment comes into a block faster then the payment of the other players.

Post your transaction id. Did you pay transaction fees? Maybe they wait until your tx is confirmed.

Every wallet is compatible for payment to any other address. A 'compatible' wallet sends the btc with a return address that is assigned to you. Incompatible wallets are most time shared wallets that don't have a shared return address in the tx. Then the game can not send back your earnings.

How is this possible??

Block	Timestamp
253462	2013-08-21 20:55:38
253461	2013-08-21 21:34:10
253460	2013-08-21 20:44:03

FAQ says:

How is the speed of a coin calculated?
Every transaction has a time when it was first seen in the network (timereceived) and a time when it was included in a block (blocktime). The difference between those two timestamps is calculated as a laziness factor. The higher it is (the more time a payment needed to be included in a block) the slower is the coin. The least lazy coin in a race wins the biggest part of the pot. If there are two or more coins with the same laziness in the same race, the alphabetical order of the transaction id decides which coin is faster.

To reduce the time to wait until a race can start, we changed the number of players per race from 10 to 4.
At the same time the maximum to win changed from 178% to 198%.

What is coinrun@bits2win.com?
It's a bitcoin lottery in the form of a bitcoin racing game. Four players take part in a race. The player who has the fastest coin wins the biggest part of the pot. The player who has the slowest coin still wins a small part of the pot.

Try your luck and race your coins!

Today is a good day to play. Try your luck!

Blockchain is public! You can verify each transaction and their timestamps i. e. at blockchain.info.

FAQ says:

How is the speed of a coin calculated?
Every transaction has a time when it was first seen in the network (timereceived) and a time when it was included in a block (blocktime). The difference between those two timestamps is calculated as a laziness factor. The higher it is (the more time a payment needed to be included in a block) the slower is the coin. The least lazy coin in a race wins the biggest part of the pot.

To get a fast coin, you can try to predict when the next block will occur and make your transaction shortly before to get it confirmed in that block.

More than 250 races finished.

Try your luck and win up to 178%.

coinrun@bits2win.com is a bitcoin lottery in the form of a bitcoin racing game. Ten players take part in a race. The player with the fastest coin wins the biggest part of the pot. The player with the slowest coin still wins a small part of the pot. The game is not spamming the network and provably fair. Everything can be verified in the blockchain.

For more info please read the FAQ or the review at Bitcoin Gambling Guide.

Not sure where you can find it in the linux version, but bitcoin-qt has a Debug Window with a console (in Mac it's under Help - Debug Window - Console). Open it and type validateaddress <bitcoinaddress>. It will show some information and if it shows "ismine":true it is your address :-).

coinrun@bits2win.com is a bitcoin lottery in the form of a bitcoin racing game. Ten players take part in a race. The player with the fastest coin wins the biggest part of the pot. The player with the slowest coin still wins a small part of the pot. The game is not spamming the network and provably fair. Everything can be verified in the blockchain.

Try it and have fun! Click here to play.

^{(Attention: It's a gambling site - you may also loose some coins. The chance to win is 50%. For more info, please read the FAQ)}