Thank you for your feedback!
The yellow tiles are actually fake, you can't stand on it . Probably the lighting makes the fake one and the real one look similar and make it hard to differentiate them. About the particle effects, I actually found that it is very easy to implement them in the game engine, and I just slap a bunch of them whenever I feel that the level is empty.
Lastly, thank you for playing my game! Have a nice day!