Hi Mike
If this game works like the one I played and linked to then it is virtually like real trading. You can only trade while the market is open. While the market is closed I can put in trades. Those trades will happen at the opening bell. Generally close to the actual real times for opening and closing bells. While the market is open you can trade and again those trades take place pretty close to when you place them. So no, you can't trade while the market is closed, you can place orders that will happen when the market opens. Everything works pretty close to real life. These games can really be fun, especially when a group gets into it and competes. Oh yeah, the trade prices are actual prices.
Ron