I love Fallout art and this is one of the best I've seen. Did you know a lot of the brains in these robots were actually provided by US prisoners (whether willingly or not I don't know)? I like the idea that they haven't had all of their humanity programmed out of them and they still like to play every now and again.
I like how you've given them a bit of personality too with the different colours in their glass domes. After all, no brain is the same and in reality these robots would each have their own little quirks I reckon.
Are going ahead with your plan to make 3 paintings themed like this?