Baseball games are slightly different from home. The fan base is crazy, most bearing long, plastic balloon like objects that you can beat together or wave in a synchronized manner following the cheerleaders for each team.
I'm also a big fan of the lack of security checks which allow you to bring basically anything you want into the game. We bought our beers in the convenience store outside the stadium and carried them into the stadium in the plastic bag with no problem. Other people brought in full pizzas or boxes of fried chicken. No problem.
In fact, usually in the US there is a no re-entry policy, I'm fairly certain, so if you leave you can't get back in. Here, my friend came out to find us and give us the tickets and then strolled back in... with his ticket of course.
Then the last big difference is the price of tickets. I come from Boston, and from what I hear, ever since the Red Sox won their first World Series to break the curse, tickets have gone from sort of affordable to outrageously expencive. Here in Seoul, we paid 4,000 won each (less than $4.00) for our ticket. Of course, there is no assigned seats, so paying money doesn't guarantee you get a chair. But, for less than $4.00 I don't mind sitting on the stairs until someone decides to go home early. You can always pay a bit more to get into a better section I suppose.
Anyway, we had a good time, even though the Doosan Bears lost. It's not like I have any real loyalty to any team. I just seem to root for whatever side I'm sitting closer to....