G1 Gnaw
G1 Wreck Gar
G1 Unicron (never produced but prototypes had a Decepticon rub sign)
G1 Sixshot (Japan - does LG50 Sixshot have any Decepticon logos?)
Cybertron Unicron
ROTF The Fallen*
RtS Wreck Gar
AoE Lockdowns
AoE Steeljaw
RiD Megatronus*
Titans Return/LG Gnaw

*Subjective -- the Fallen was initially not a Decepticon. In some continuities he's never a Decepticon, but in the Bayverse he influences Megatron to create the Decepticon faction and in the Aligned universe he claimed to be the first Decepticon but there's no canonical evidence to back this claim.
Quote Originally Posted by DELTAprime View Post
Speaking of Japanese stuff. I just found out that Takara and Takara Tomy have developed a bunch of video games over the years (most non Transformers related) dating back as far as 1987 when they made Transformers: Headmasters for the Famicom Disk System (Not to be confused with the cartridge based Famicom AKA the NES).
They made Mystery of Convoy in 1986, although that was cartridge game.
The Famicom Disk System isn't a stand-alone console on its own, it's a add-on disk drive that attaches to your Famicom console.

I used to own both an NES and Famicom back in the day.
I didn't own the Disk System but I knew other kids who did.