Meaning you play one of those choices matter games with dialogue options and customization and all of that, how do you play your character?
I play myself!
I play someone completely different from myself to have new experiences
I play based on what I think my character would do based on story, backround, etc
I just kind of make it up as I go
I usually make a joke character to be funny
I make who I would like to be, ideally. Or maybe an idol I admire. That type of thing.
Other
I like to come up with different characters who have different motivations but they all usually end up being at least decently friendly people, mostly because I hate being mean to video game characters because I'm a loser and I might hurt their imaginary feelings.
Needed an all of the above. I've literally done all of those things, it just depends on how I'm feeling at the time.
Generally I play what I'd do but, If I've played a game a few times I'll change it up.
The first time round I usually play it how I think the character would act, but on subsequent playthroughs I'll just go for whatever I'm feeling at the time.
I play myself, of course! It doesn't matter if it's the real life, internet or an video game - I'm always myself.
I try my best to play the character as I expect them to be. Basically the same thing I do with characters when I am writing a story.
I am a professional RP-er and will get into character of course. I remembered one of my role was playing a serial killer in the Red Light District in downtown Midgar. The amount of rats I killed to get into character prior! This is what professionalism is all about.