Rest assured that our games will either wait for you to make any selections or they will play out on our servers for you, with your winnings added automatically. This means you can just wait for the site to load back up and then go back into your game to see if you can just carry on from where you were.
If you return to a new game, this will mean that it has already played out for you. The games all play on our Random Number Generator, so the results would be the same as if you'd seen it play. You can check the result by clicking My Account > History > Game History.