There are many ramen dining places in Singapore but in my honest opinion, Marutama ramen has got to be one of the better ramen outlets in Singapore. Located at the Central, this place offers ramen with thinner noodles (which is better than those thicker ones that makes it almost like udon) and their tamago (egg) is probably one of the best in the business. Do feel free to pop by here for a nice bowl of ramen here which you can top with seaweed and generous portions of spring onions. Water is foc and there are finger food available as well.
The inside of the place can be a bit dark but I don't feel that it matters a lot.