Hi Albion and all,
I’m a bit late to this party!
Warning! Incoming wall of text!
TLDR; As a long time (on and off) gamer, I would say that gaming is good for keeping the mind active and helpful for physical things such as coordination. From soduku to backgammon through kong and Mario on to halo, TESO or LOTRO and everything between – it’s all good. Just remember to not over do it!
My education is in computers / computing and for some time my work in various jobs included basic tech support. In my spare time I also built and managed home computers and small networks for friends and family. I never listened to people who would tell me not to make my hobby into a job until it was too late and I found myself shunning computer entertainment as I was doing so much other computer related tasks. In short, I took a couple years break from gaming!
Fast forward! I began gaming again and now have an OK gaming rig.
I quite like the Elder Scrolls and have played most (if not all) of the games from Redguard to Skyrim and The Elder Scrolls Online. I even have Morrowind in German – though mein Deutsche ist nicht so gut!
I also played the Warcraft games and then World of Warcraft alongside my nephew when he was old enough (home network > internet).
I can easily see how you could find The Elder Scrolls a bit boring in solo but would say that, if you have a suitable computer (or console), you could try out the fantastic Skyrim as a ‘stand alone’ entry into The Elder Scrolls. If you want to play with friends and on PC over the internet, The Elder Scrolls online (TESO) could be good for a start. (LOTRO) The Lord of The rings online is actually an old (ish) game and can be played on older computers but there is a game mechanic (war horse control / riding / combat) that works much better with a more powerful machine and a fast internet connection. That in mind, The Lord of The Rings Online is a very good game.
The most annoying thing for me as a gamer is the fact that I simply cannot keep up with more agile players. My coordination is not great on the best of days and this is not good when raiding for example! A lot of modern online games can be played extensively solo, in a kind of ‘co-op’ style play or with groups of players. Even playing something like TESO or LOTRO solo will bring you in to contact with other players of many skill levels. Though it might take some time to find a suitable group for online friendship and ‘team’ playing, there are many groups or ‘Guilds’ that cater for people who play casually, are less agile or have disabilities. And as Migetony wrote, find the right Guild and you will meet some cool people.
As for faster games, I used to play World of Tanks and World of Warplanes but hardly ever use them now as I cannot react fast enough to be competitive and this takes away some of the fun!
My main game now is a total conversion mod of Skyrim called Enderal. The game is great for me as I can take my time, explore and ‘level’ very much as I choose. Being single player, Enderal also affords me the luxury of playing when I feel I can and easily saving the game to continue later if I feel too fatigued or in pain to continue.
In general, I would say that gaming is good for keeping the mind active and helpful for physical things such as coordination. From soduko to backgammon through kong and Mario on to halo, TESO or LOTRO and everything between – it’s all good. Just remember to not over do it!
So! I hope you all can find or have found a good game that is suitable for your ability and play style. Keep gaming. 
Add: I know it can be expensive but if you can get access to VR gaming then do! I have used VR (VIVE) to play some basic sit down and play games and found them great for a work out and very fun. Of course, the VIVE allows for Stand up and move around the room type games but these are not suitable for me due to my gait ataxia. 