the browser version (quake live) has much better graphics, effects, etc. than the original cd-rom version from 10 years ago. the dev team has done a great job of updating the engine + optimizing it to run in a browser. the graphics are actually amazing for an engine over a decade old. it's not really even a typical "browser-based" game per se, the browser just gives you access to the quake live client. all that being said it's still the action + gameplay that makes it a great game, not the graphics. either way there is a very large community who still play quake. not sure how many are going to shell out 24 dollars a year to keep it going, though.