Sunway Lagoon consist of multi-parks which you can choose over 2 days. There are a total of 5 different parks ie water park, amusement park, wildlife park, extreme park and scream park. I covered all 4 parks except scream park over the span of 2 days. Water park is fairly big and we spend a day there. For the other 3 parks, we managed to complete it in a day. Special recommendation: please try the 5D water ride in the water park!