Vikings defense end Jared Allen could play his final game in purple on Sunday, but he's more focused in taking part of the final game at the Metrodome at the moment.

"I'm trying to go out the way I want in this Metrodome and have this last game be something special," Allen said. "Kevin [Williams] and I talked about it earlier this week, saying we just want to let loose and make it a game to remember, from a win standpoint, from our performances, the crowd, the energy level, all of that."

Allen will be an unrestricted free agent in the offseason and did spend time discussing the uncertainty around his career. The 10th year veteran wants to play again next year, but the free agency process will be less stressful.

"When you're younger you're trying to figure out all this craziness, and when you look back you realize there's a plan and it's better than any kind I could've hatched," Allen said. "So I'm just enjoying the ride, honestly. If this ends up being my last game here, then it's been one of the greatest rides I've ever been on. It's been a great six years."

Allen has yet to play in a Super Bowl however, and he said that will play a big factor into what occurs in the offseason. He's had four postseason appearances in his career, reaching the conference championship game once with the Vikings in 2009.

"Heck, everybody would love to retire like Ray [Lewis] and [Michael] Strahan, right?" Allen said. "Win a Super Bowl and call it quits. So that'll be on my mind, and that'll definitely be a place when you get older, like I said, the later you get in your career that becomes more the main focus of how do you get to a championship."

Here's the injury update from both teams:

Vikings: LB Audie Cole (ankle), RB Toby Gerhart (hamstring), DT Letroy Guion (quadriceps) and CB Shaun Prater (ankle) and G Charlie Johnson (not injury related) did not practice Thursday. RB Adrian Peterson (groin/foot), RB Matt Asiata (ankle), LB Larry Dean (knee), DT Fred Evans (knee), CB Chris Cook (knee), S Harrison Smith (foot/groin) and CB Xavier Rhodes (ankle) were limited participants. FB Jerome Felton (knee), G Brandon Fusco (knee), WR Cordarrelle Patterson (chest) and CB Marcus Sherels (shoulder) were full participants.

Lions: TE Dorin Dickerson (concussion) and TE Brandon Pettigrew (ankle) went on injured reserve. CB Bill Bentley (concussion), S Louis Delmas (knee), WR Calvin Johnson (knee), LB DeAndre Levy (foot), S John Wendling (ankle), CB Chris Houston (toe), G Dylan Gandy (illness) and T LaAdrian Waddle (ankle) did not practice. S Louis Delmas, RB Joique Bell (knee), CB Jonte Green (shoulder), DE Israel Idonije (neck) and CB Darius Slay (knee) were limited participants.