Do you "roleplay" in non-TTRPG Games?

[Agamon]

I play a lot of city builder/colony sims. A lot of these games don't really have a definitive end game and the environments are procedurally generated, so role playing as the leader or even making decisions for inhabitants based on their personality is where some of the fun comes from.

 

[TwoSix]

In terms of creating an avatar persona, and then making decisions in the game based on my interpretation of how the created persona would choose?

No, I don't do that in other games. I will sometimes make decisions based on objectives other than winning. Like "I want to keep the game interesting but will ultimately let her win" when playing with my 10-year-old, or "I'm going to try to see how well I do without playing any science cards" in 7 Wonders. But that's not based on any sort of roleplaying persona.

 

[aramis erak]

To be fair, talking in funny voices does not have any impact on game resolution in D&D either.

I've played at tables where it does. Maintaining a consistent faux accent in play was rewarded by that GM with a +1 on your to-hits. Another GM, in AL play, gave inspiration for voices and costumes...
I give extra XP for non-organized-play for good RP, which can include picking an accent or vocal mannerism and sticking with it.

It's not overly common, but there are some who reward those funny voices. And in 5e-14, it falls within the purview of GM giving inpiration as seen fit..