Every things that you have to click on is always designated with a number counted from left to right

Plains:

3 2 1

Desert:

3 3 1 2 1

Space:

1 3 2 2 3 3 2

Snow:

4 1 3 1 1 2 5 4 5 1

Cabin:

1 1 3 2

North:

2 1 3 3 1

Jungle (part 1):

2 1 4 2 1 3 3 1 2 2 1 2 4 3 2

Jungle (part 2):

1st sequence: 1 3 4 2

2nd sequence: 3 1 3 4 4 2 1 2

3rd sequence: 4 4 2 4 3 3 1 1 3 2 1 2

4th sequence: 2 3 4 4 1 4 2 2 3 4 1 3 3 1 4 1 1 2 3 2

Bunker:

There are 3 hidden objects that you have to click on: A cable (on the floor), an electric box (on the trolley) and a lever (to the right of your rock, on the floor just in front of the grey ?frame?). Pull the lever and click on the lights for as long as they lit up respectively. From left to right (personnal counting):

Green lights : 2s each

Yellow lights : 2s, 4s, 4.5s and 3s

Blue lights : 4s, 5.5s, 3s and 6s

Pink lights : 7s, 11s, 9s and 8s

(Sadly it's a pretty precise one and will most likely require quite a bit of practice to be able to consistently do this puzzle)

Canyon:

3 3 1 4 1 2 2 1 3 4 2 then click on the giant rock in the middle of the canyon to validate your sequence

Ocean:

Left clam: Red Green Green Yellow -> Click on the clam to open it up, then on the pearl

Middle clam: Pink Blue Pink Red -> Click on the clam to open it up, then on the pearl

Right clam: Blue Yellow Red Pink -> Click on the clam to open it up, then on the pearl