At Comic-Con, Cliff Bleszinski revealed that Gears of War 2 would feature linked Achievements, or special content that is unlocked only if you’ve earned a specific achievement in the original Gears of War. For example, if you’ve completed Act One in Gears Of War, you will unlock a playable Anthony Carmine in Gears of War 2. This is similar to what Peter Molyneux is doing with Fable on XBLA, i.e. enabling you to win currency that can then be spent within the world of Fable 2.
I suspect that this sort of thing will become increasingly popular with developers, some of whom will do it simply because it’s cool, and some of whom will do it because it can be useful for promotional purposes. (Use the earlier release of “Game A” to help drive interest in “Game B.” Or alternatively, take “Game A,” which isn’t expected to be a huge hit, and link it to “Game B,” which is expected to be a huge hit, in hopes that “Game A” benefits — a potentially more subtle or interesting version of the “bundle Game A with a demo or beta of Game B” strategy.)
