Thank you for your comments! The jump and hit sound effects have been chanced, and several small bugs have been removed. I will update this game further soon (sounds and graphics), please let me know if there are more things that can be made better or updated!
Thank you for commenting on my game I really appreciate it!
And yes indeed this is just a platform game, but that was the idea, built a platform game, with basic controls and goals. There is no music in the game because of the size of the file (bandwidth). I like to program games but I am not a "pro" I like it more to create the graphics and levels.
 "Proong Jumper Game"){kind=icon}
 "Hopper"){kind=icon}
 "GemCraft"){kind=icon}