I found feeds to a browser RPG called CITY OF TRANSFORMERS.

Ok the game's certainly not an official element of TFs in any way.
Nor does it look directly anything to do with TFs.

But It appears to be an unofficial Transformers origin story.
As the main villains are called QUINTASSONS. The setting is an organic planet which looks to become CYBERTRON in the future.

There are two side, humans and mechs. Needless to say the mechs look cooler.

This might not be everyone's bag. But I think some TF fans might like this one.

 

Are they hoping to release this game at retail, because I smell a lawsuit! XD

 

I think so.

It looks as though the game's worked round possible copyright grumbles.

It's clearly aimed at TF fans though. So it wouldn't surprise me this game gets nobbled.
But it looks cool and I love the idea. So I hope it does well.