Well, you could get Demon's Souls, if your goal was to Platinum it, since you'll need to have four playthroughs and some massive grinding sections, which can boost your total playtime to +100 Hours.
You could also wait for WKC (White Knights Chronicles), that game will have a +150 Hours playthrough if you want to do all sidequests and online missions as well
Final Fantasy XIII, releasing in March 9, from previews and online forum-goers have said that it needs over 120 Hours to complete everything in the game.
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
