We had an opportunity to speak with id co-founder John Carmack after the big EA press conference yesterday (where id
surprisingly announced a partnership with EA to publish Rage). We grilled the legendary game developer (and part-time rocket scientist) about id's post-apocalyptic shooter, the state of gaming graphics, and what his plans are after id Tech 5. Rage looks be a drastic departure from the traditional id
FPS, not only in gameplay style (open worlds with vehicles vs. claustrophobic indoor environments) but also in the way Carmack has designed the code-base. id has already announced that Doom 4 is in development (no publisher has yet been annonced), and Carmack confirmed that it'll run at 30Hz and run with several times the graphics power as Rage, a 60Hz game.
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Source: Maximum PC