"BFDIA 5b, or simply 5b, is a Flash side-scrolling platform web game made by Michael and Cary Huang. It is the 2nd part of the 5th episode of Battle for Dream Island Again and the 30th episode overall. The game was released on Monday, February 11, 2013 at 11:22:11 PM PST (GMT-8), as announced in an update video on Thursday, January 31, 2013.[1] BFDIA 5b is the only episode to be a game rather than an animation. The game involves FreeSmart members traversing through Evil Leafy through several levels, trying to escape.

When the game debuted, it had 33 playable levels and the player could not pass Level 33 until February 19, 2013. From February 19 to 25, the game had 50 playable levels and the player could not pass Level 50 until February 25. Due to Cary being very busy, the February 25 update only added 3 new playable levels. The game has 53 playable levels, but the player cannot pass Level 53. Even if the player gets past Level 53, Level 54 is empty and has no data.

A note in Level 53 says levels will be uploaded as soon as they are made, but on March 3, 2013, it was announced that the game was postponed for now due to BFDIA 5c being worked on. In BFDI's Best Hiatus Ever, Cary revealed that BFDIA 5b will be completed, possibly in the next few months, along with some other projects. However, no updates were made to the game, until a livestream on 2025, where Cary mentioned he has been working on a game. after that, in the 2025 Vidcon, someone asked: "Will BFDIA 5b ever be finished?". Cary replied: Yes.[2]

The game could be played here before Adobe ended support for Adobe Flash Player on Thursday, December 31, 2020, and restricted Flash content on Tuesday, January 12, 2021. It can currently be played through various other means, such as Flashpoint Archive or the fanmade HTML5 port.

Cary released the source files on Monday, July 4, 2022, in a GitHub repository."

• BFDI Wiki