<And again, why I didn't see your commands... Mystery. Sorry.
Congratulations, Dino! You entered the game, and in the very first post noticed key element! *fireworks*
Stardust: Be observant. Explore every inch of room with eyes.

There will be much more observation clues-puzzles. >
I notice a very light gray square outline on the ground close to the door. Try stomping on it and see what happens.
Mr. Stick inspects the floor more closely... And he thinks he noticed something! There's white object on the floor.
He carefully puts his foot on it...

It moves slightly, it seems it's some kind of paper.
Or something else, but it seems harmless.