The Linux build works just fine. I can't figure out how to go to the secret garden (or even get out of the house), but that's another issue... However, from what I've seen so far, the game looks really nice and interesting :)
Thank you for your comment ! In aim to get out the house, you need to succeed the mom' test, talk to Vince on the computer, talk to the dad and take the pot of coffee. I hope you'll find the secret garden soon ^_^ Thanks again to have let me know that the Linux version works !