Acid Rain is a stage in Tekken 5. This stage is located in Seoul, South Korea (evidenced by many signs written in Hangul). Old buildings and a metal fence surround the fighters. There is some acid rain falling into this area, hence the stage name. A huge animated robot lobster can be seen higher up on the side of one building. Also, there is a glowing crescent moon near the lobster. People can also be seen walking on a bridge. A small statue of a duck can be seen on the right side of the wall.
The characters who have interludes in this stage are:
Street Wise Asura Mix
- This is possibly Lei Wulong's stage. The stage's design is reminiscent of his Tekken 2, Tekken 3 and Tekken Tag Tournament stages.
- This stage is the only stage with two songs which changes depending on the mode (Story Mode fights have the Asura Mix while other modes have the original).
- When one of the fighters hit the duck statue, the duck statue's head will change position.
- This stage is the counterpart to Festival in Dark Resurrection.