Instead of curving, I'd suggest scaling the text size (darn, I'm never next to the program when I'm answering these things) so that it increases in size as it gets closer to the middle. Don't be afraid to have some fun with the colors and fonts, too. Just don't go crazy - one or two fonts is sufficient. See if you can find a pattern for your background - maybe you can find a silhouette of Mario that you can use as a tile in a slightly darker blue.