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The player guides a green blob down a square tunnel using the arrow keys. The player can move forwards, backwards, or to either side, and may move from one wall to another by moving laterally, bouncing off of a pink panel or going through a green panel. Whatever wall the blob is on appears as the floor to the player. The player can only walk or land on given tiles. Bouncing onto a red panel results in death. A hole can be turned into a tile by rolling a ball of residue into it.
Flue was first hinted at on the May 9 Friday update post in 2014, where Nitrome presented the possibility of releasing a new game the following week.[1] A screenshot of the game was officially announced on May 13, 2014. The post showed a GIF of the gameplay and also revealed that it was an icon game.[2]
↑Game Developer's Blog - Nitrome:
Friday with a cuboy viking!: ...we might even have a brand new game for our website as well., 9 May 2014, retrieved 13 May 2014.
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