Hotel Dusk - Room 215 History
Production took about a year and a half with 20 staff members
involved. In an interview with Qj.net, Director Taisuke Kanasaki
"explained that they wanted Hotel Dusk to have an unprecedented visual
expression not found in any other game."
The game uses rotoscoping to animate its characters while a brushwork style illustrates the
game's environments with half-finished backgrounds with 3-D objects
strewn about. While not a first in gaming, rotoscoping is still rare in
most games (with only a handful, namely the original Prince of Persia using the animation style). (From Wikipedia entry)