Drake's Experiments locations guide
Wolf
Follow the instructions for the Lawyer Experiment. Return to the Dream Lab and head north to the Cage area, and stop time with the Lawyer Experiment and head to the wolf that was previously running around too fast to catch. Interact with him for the Experiment.
Zepplin
Enter the Scrapyard area either through the basement of the Dream Lab area or from the hole in the Lightpost area. From there head southwest or northeast, respectively, until you find a crashed Zepplin. Interact with the hole on the Zepplin (the rightmost tile) to obtain the Experiment.
Lawyer
Enter the Lightpost area and head north into the Courthouse. Interact with the totally-not-Phoenix-Wright to get it.
Sharpshooter
After obtaining the Zepplin Experiment, fly across the gap in the bottom area of the Labyrinth and enter the top green portal. Make your way through the area and enter The Tower. Head down the stairs and enter the centre room and pick up the gun on the floor.
Russian Doll
Head into the Cliffs area and make your way to the other side where the snow marks a Zepplin fly spot. Enter the room with the Small Experiment and talk to the largest doll to get the Experiment.
Cor Anglais
Head into the Labyrinth and enter the orange portal on the far right of the area. With the Wolf Experiment on (needed to outrun the extra fast chasers), enter the portal on the left into the Orchestra House. Head up the read carpet and up the stairs and interact with the empty seat.
Small
Enter the lower left red portal in the Labyrinth and complete the maze. Using the Zepplin Experiment, fly over and talk to the small Drake.
Woman
Go to the hospital and enter the second door to your right. Make your way through the chair maze and interact with the woman sitting in the chair.
Electric
Enter the Thunder Plains (either through the fireplace from the Russian Doll House, from the sign in the rightmost room of the Tower, 2nd Floor, through the dual lightposts in the Lightpost area, or through the dual monitors in the Hospital) and make your way to the middle of the area. Interact with the lightning rod to get the Experiment.
Blueberry
Enter the top floor of the Tower and make your way around and enter the doorway in the bottom middle. Interact with the fruit statue to begin. Using the OFF Experiment to light the first room, make your way into the right light path. In the next room listen to the glass that makes sound when you walk on it and enter the one nearest to it (the top path). Next room, find the laughing man that dies with the Sharpshooter Experiment and enter the light path next to him (left). In the final room, you must find the right way using the word "right" written on the signs. Enter the corresponding path (bottom). With that interact with the berry statue to get this effect.
Color Guard
In the Labyrinth, enter the uppermost blue portal and make your way through it to the China Map (where you'll find references to other fangames). Interact with the ghost and make your way to the front of the Trans-Siberian Express. Ask the driver to stop and exit the train into the Dark Cliffs. Using the OFF Experiment to light your way, make your way to the top and enter the small Lake. While there, you can use the Otter Effect to help move faster, although not necessary, head southwest into the coral and you'll surface at the Football Field. Use the Sharpshooter Experiment to make your way into the centre of the formation, and talk to the shadow with the blue flag.
Otter
In the Labyrinth, enter the uppermost blue portal and make your way through it to the China Map. Interact with the ghost and make your way to the front of the Trans-Siberian Express. While there, instead of talking to him, shoot him with the Sharpshooter Experiment to make the train stop prematurely. Exit the train into Kowloon Walled City. Make it through to the School and enter the middle door. Interact with the swimming otter in the tank.
OFF
In the Labyrinth, enter the uppermost blue portal and make your way through it to the China Map. Interact with the ghost and make your way to the front of the Trans-Siberian Express. While there, instead of talking to him, shoot him with the Sharpshooter Experiment to make the train stop prematurely. Exit the train into Kowloon Walled City. Make it through to the School and enter the middle door. Enter the hold left by the Otter Experiment and swim though the Aquarium and got southwest to find the entrance to the Baseball Field. From here just go down and talk to the batter.