Y'know the whole glitchtrap thing? Let's have our main protagonist be the gamer.. but what's this? He's completely a computer virus and he needs to do a Afton to get out! We add a moral dilemma And risks such as being genderbent due to possessing anyone really.. Next issue (The gamer) part.. let's have it's stats translate to reality when he possesses someone and all skills / magic learned is available. Or perhaps have them half possess them but the person also has the abilities of the gamer due to soul bonding in a sense.. but the computer part stays active so they can instahack things.