DRG places the player in the boots of one of four proletariat dwarfs, allowing the player a unique perspective of the struggles of the working class under systems of corporate neglect.

You can play as a futuristic egalitarian inter-stellar worker's state, there is nothing more to say.

You can play as Marxist-Leninists, there is nothing more to say.

TF2's red versus blue is a clear metaphor for the class struggle. The red, a reference to communist imagery, represents the defiant proletariat, and blue represents the oppressive bourgeoisie.