all completely different games, cod4 is best for playing for yourself, halo 3 is best for community aspects, and gears has a brutal charm of its own, even if the achievements in my opinion are impossible.

How to get "The Family" "The Sacrifice" and "The egomaniac" achievements in one play through. * mega spoilers *

Ok, i thought of this immediately and i apologise if this has already been said.

*spoiler*

Basically, after you kill lucien, you are offered a choice. each one will get you 25g

Now choose one, and when you see the achievement come up turn off you xbox and start it up again

rinse and repeat for all three.

voila! 75g! now which decision you will stick with is a trickier choice.