5 hours 61 minutes should be 6 hours 1 minute..
I'm not sure exactly how long I've been playing Red Steel 2. I would guess about 12 hours or so as I reached the end but I'd have to check my Wii for an exact time, those were in blocks of about 4 hours at a time to avoid arm ache. It is a very addictive game though, my favorite move is flinging them up in the air and then shooting them dead before they hit the ground. I also did that thing with the hammer guys, getting the others in front so the hammer takes them out.
Quite a few games have had me playing continuously though. I played Metroid Prime 3 non stop until I completed it (then played it again) and I logged 275 hours on Rune Factory before the disc started getting read errors from being used so much, probably spending 4 to 6 hours a day playing it.