O Quarto is a point and click escape the room type game.
In this game,you have to search everywhere to find items and clues in order to use for escaping from the room.
Good Luck!!!

Play O Quarto

Walkthrough:
Go right once – turn on light
Zoom in on right front chair leg – red gem
Go right once – zoom under end of bed – note
Zoom under pillow – knife
Go right once – chemicals in drawer

Go right use knife on bottom of dresser (light spot) – take note and key
Use key on upper drawer – take not of picture
Zoom under dresser – blue gem
Left of dresser – laptop
Put 2 pieces of paper together
Zoom in on picture – look at paper for code
Take green gem from picture
Code for laptop: 3780
Click on chemicals – mix until you get vapor
Click on window – use vapor on window
X=Red
Y=Green
W=Yellow
V=Purple
Code from laptop for acid
2 drops red
7 drops green
9 drops yellow
10 drops purple
Code from laptop for Deoxidizer
5 drops red
3 drops green
4 drops yellow
16 drops purple
Look close at green stone – use acid
Look under corner of rug – click on antioxidant to combine (rust remover)
Use rust remover on bathroom door
Click on mirror – use vapor
Click on faucet spout – get key
Open shower curtain
Leave room, go left and turn off light
Go right and into bathroom – see X
Go out, left and turn on light
Go left once, use key on bottom drawer – get hammer
Go back to bathroom and use hammer where X was
Pick up blue gem by bathtub
Click on purple item in wall
Use gems to open safe – clockwise from top: Dark Blue, Green, Red, Light Blue, Yellow
Open safe and get key
Go out and use key on door
You’re out!

Source: Escape the Room

Online Games point-and-click walkthrough