Of this/current-ish gen; Skyrim's not been uninstalled since the day it launched, which is the only game that's never budged from my never-upgraded 120Gb 112Gb 360 drive.
The [latest] Tomb Raider reboot is the only other game, off the top of my head, that has a bizarrely compulsive replayability factor; just the actual moment to moment gameplay (movement, immersive HUD, controls, sound design, etc) is satisfying to the extent that I've never found it a chore, or got bored by it. Lara's, finally, a great character to virtually hang around with, and Yamatai's a gorgeously crafted and varied world, rich in detail.
Whether those technically count as 'always in the mood to play'? Perhaps not, but those are two games I can't seem to tire of, no matter how many times I return to them.
Oh, and then there's Street Fighter IV, which qualifies simply because its core gameplay stretches back to SFII, and is - one could argue - perfect, conceptually, ergo I can always jump back into that series and love it.
The [latest] Tomb Raider reboot is the only other game, off the top of my head, that has a bizarrely compulsive replayability factor; just the actual moment to moment gameplay (movement, immersive HUD, controls, sound design, etc) is satisfying to the extent that I've never found it a chore, or got bored by it. Lara's, finally, a great character to virtually hang around with, and Yamatai's a gorgeously crafted and varied world, rich in detail.
Whether those technically count as 'always in the mood to play'? Perhaps not, but those are two games I can't seem to tire of, no matter how many times I return to them.
Oh, and then there's Street Fighter IV, which qualifies simply because its core gameplay stretches back to SFII, and is - one could argue - perfect, conceptually, ergo I can always jump back into that series and love it.