I think it looks very much like a Zipstik (http://blog.tynemouthsoftware.co.uk/2016/03/zipstik-joystick...).
The TAC-2 is smaller and a much simpler shape, see https://en.wikipedia.org/wiki/TAC-2.
Re:The C64 Mini Computer
by unwiredben on Friday September 29, 2017 @11:41PM
(#15371089)
It's a clone of the Competition Pro, the same design was used for the earlier Commodore DTV
See https://en.wikipedia.org/wiki/Kempston_Micro_Electronics#Com... and https://en.wikipedia.org/wiki/C64_Direct-to-TV
> THEC64® Mini will hit the shops in early 2018 with a suggested retail price of £69.99/$69.99/€79.99.
And the controller looks similar to a Tac 2, which is a win in my book :).