BBQ Box (@Kallang)

Just 5 min walk from Kallang MRT station on the south side along the terrace row, you will find this crowded with lots of Customer from early evening. Concept of the food is meat or fried veggies on skewer with beer. You only pay per skewer. The amount is quite big, so I would recommend to visit in big group. General price is very cheap. 30 dollars per head will pretty much give you enough amount.
Address: 101/103 Geylang Road 389212
Tel: 9234 8659

Haramiya (Japanese BBQ)

Stylish BBQ restaurant in "Central" of Clark Quay. Good for those who are looking for not so over crowded, nice quality meat based Japanese/Korean fusion. Carbi set menu may be a good set food. Soup, cold noodle.

Seoul Garden (BBQ)

One of the few all-you-can-eat type BBQ restaurant I have been in Central area in Singapore is this Seoul Garden. It is in the 3rd floor of Bugis Junction in the restaurant area near Ma Maison or Kazokutei. You can see the menu price in the photo. The food quality is average and priced at what you get level.

Hanatora (Yakiniku BBQ in Boat Quay area)

Desperate for Yakiniku in all you can eat style? The newly renovated restaurant along the picturesque Singapore river is the Hanatora. 52SGD for adult and 20SGD for children. You can order at your table and enjoy the grill in front of you. You can even have the limited edition cow tongue one plate per person.