I have been out of Gencon for a few years  due to kids and pandemic. Which restaurants and bars do gencon related theming like the old Ram and Scotty's Brewhouse use to do. 

Nothing like them, but there are at least a dozen restaurants who are at least trying to have some nerdy theming for things.  I have not kept track of the specifics because "trying a little" is incredibly popular but "going all-out" seems a thing of the past 

Someone from Whistle Stop Inn actually visited a thread here and asked what some good ideas would be:

https://www.gencon.com/forums/104-travel-housing-and-dining-2023/topics/18634-unofficial-off-site-participating-bars-and-restaurants-gimme-dat-swag

I don't know what they'll end up doing, but it intrigued me enough to convince me to check it out at some point.

Social Cantina also wrote in. A little over-enthusiastically, but I'm a forgiving sort, so I'll work at making room to drop in on them too. They'll have customized menus, merch, themed days (Star Trek, D&D, etc.) and the like. It's all there in the linked thread. We'll see. 

I was about to list Nevermore at Union Station, but their website says they're closed and will eventually open with new management. I don't know if they would've done something special for Gen Con itself, but they seemed to almost be themed enough just as a matter of normal operations. At least from their description. Doesn't matter now, given that they're closed.

Nevermore will be very open during Gen Con, with Hunter, Backerkit, and Rollacrit using the space to host games and food; I'm sure they would love everyone to stop by!

See here for more details: https://www.rollacrit.com/blogs/news/rollacrit-adventures-onto-the-show-floor-at-gen-con-2023

Well that's damn good to see! I think I'll have to find time to drop by then.

Even better, it's going to be an offsite/activation at Nevermore (people who have been to large comic cons know what this is). The area will be themed to Heroes of Barcadia and have characters from the game roaming around and interacting with patrons.

Well damn! I'm glad I was wrong!

I mean... they need to change that part of their website, but outside of that everything else I'm reading sounds really incredibly awesome.

Even without any theming it sounded like a cool spot. But with all this stuff it's even more so. 

Just wanted to point out the Social Cantina, on the corner of Illinois and Georgia St, has a themed menu, featured cocktails for each themed day! They’ll also be playing stuff on their tvs for each theme day. Also, they’ll have bags, tshirts, stickers, and glassware for sale with their inaugural GenCon 2023 logo! They’re a taco and tequila joint with fresh ingredients daily!