Reply to midi fighter with joystick?

I am new to this community so I hope this is the section to ask this question. If not, sorry Won't happen again)

I could have sworn I saw a video showing Ean rockin a midi fighter with a joystick attached to the box. Is this a custom mod? I don't see it in the store so that is my assumption. If so can anyone point me in the right direction to building a similar unit? Or possibly a similar unit that might be able to be easily mapped a similar way?

Thanks in advance and again I am sorry if this question is stupid as I am new to this community and controlers in general. Production has been my main focus for the past ten years and this amazing new trend in djing has somehow eluded me till now unfortunately. Ordered my vci-100se and can't wait to get into it! I see it as not only a means to bring more excitment to my dj gigs but as another element to incorporate into my live show! FUN!