|World 4 Giant Jungle (NSFMBTAR)|
|Appearance||New Super Flash Mario Bros. The Adventure Returns|
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In the fourth world, it is half-jungle and half-giant, which is based on World 4 from New Super Mario Bros.. A background will be the New Super Mario Bros. Wii styled jungle, even the background was unseparated which was outside of the beach.
World 4-1 Jungle of the Giants
A first and jungle-based level with giant enemies. This level is similar to first level of Soda Jungle's same level name in New Super Mario Bros. U and World 4-1 in Super Mario Bros. 3. This level introduces Poisoned Water.
World 4-2 Jungle Frenzy
A second and jungle-top view level. This level is half-based on and half-similar to World 4-3 in Super Mario Bros. and features giant stuff again.
World 4-3 Jungle Lake
World 4-Tower Iggy's Grassy Tower
A tower level with Sledge Bros.. The boss is Iggy Koopa.
World 4-4 Big And Small Jungle
A fourth and giant forest-themed level with normal and giant enemies. This level is based on World 4-6 in Super Mario Bros. 3.
World 4-A Beach And Jungle Theme
A first secret and beach and jungle-themed level with many normal and giant Crab enemies.
World 4-House Grassy Ghost House
A ghost house level with many medium and big Boos.
World 4-5 Wiggler's Poison Water Tunnel
A fifth and undergrond level with normal and giant Wigglers. This level is similar to World 5-2 in New Super Mario Bros. Wii.
World 4-6 Poison Water Log Raft Ride
A sixth and jungle-themed level with giant enemies. This level is similar to World 5-4 in New Super Mario Bros. Wii. This level is about Mario who travels across the Poisoned Lake on a wooden plank.