The game has a simplistic plot: It starts with Winnie the Pooh and Christopher Robin walking in the Hundred Acre Wood. When Pooh complains that he's hungry, Christopher Robin tells him to remember his favourite times. Pooh and Christopher Robin read through birthday scrapbooks of several of Pooh's friends and end with Winnie the Pooh's birthday.
Winnie the Pooh's Rumbly Tumbly Adventure has three different modes: Birthday Adventures, Junior Mode, and Multiplayer Games. "Birthday Adventures" acts as the Story Mode, "Junior Mode" is for young kids and has no objectives, and "Multiplayer Games" features multiplayer minigames.
This game provides examples of:
- Ascended Extra: Not for the franchise as a whole, but for this game specifically, Pooh is now the primary playable character.
- Birthday Episode: The game is themed around the birthdays of various characters.
- Cash Gate: Bees barricading your path can only be dodged with honey, which can be found by interacting with (read: kicking) certain objects.
- Demoted to Extra: Piglet, formerly the primary playable character, is now only playable in specific areas.
- Easier Than Easy: "Junior Mode" has no objectives and is aimed at even younger (5-and-under) players than the main game. It mostly serves as a tutorial for Pooh, Tigger, Piglet and Eeyore's controls without the (relatively) scary Heffalump and Woozle enemies that plague the main campaign.
- Final Boss: Averted. Unlike the previous game, the game ends with only bees barring Pooh's path to the treasure chest.
- Licensed Game: It's an action-adventure based off of Disney's Winnie-the-Pooh.
- Playable Menu: The main menu works by having the player move Pooh around a small hub area to interact with the options scattered throughout. The options menu consists of a separate area full of machines accessible through a railway cart.
- Stealth-Based Mission: If you're ever playing as Tigger, there's a 100% chance this is what you'll be doing. Tigger, unlike Pooh's balloons and Piglet's scary faces, has no means of defense against Heffalumps or Woozles, and once caught slows to a snail's pace, so he must avoid confrontation at all costs.
- Spiritual Successor: To the Piglet's Big Movie video game tie-in, Piglet's Big Game. The main differences are that you spend most of the game as Pooh, he can now defend himself from Heffalumps and Woozles, and Eeyore is also playable.
- Took a Level in Badass: Played with. Pooh himself is no more powerful than he was last game, but through the balloons he can pop, he now has a means of actively getting rid of Heffalumps and Woozles when they appear. Previously, he was defenseless (like Tigger remains) and was doomed once he got caught between two enemies.
- Whole Episode Flashback: The game is a series of memories based around characters birthdays.