This is a review of the downloadable version of the game available in itch.io
Starting the game was very difficult. The instructions say that you can jump with Space (A) and that you move with A/D, yet in the start menu, other buttons are also available like W and S. I tried several keys for starting the game: enter, q, e, z among others, which are the usual keys associated with the WASD movement scheme. Non of the keys worked. I finally tried to use the jump button (Space) and it did work. The game should communicate its instructions in a simple and understandable way.
Regarding the game itself, I welcomed the charge bar when preparing a jump. You do have to get used to this jumping mechanic. I think that a first room that better instructs the player on how to jump would be better. For example, the first room could include three parts: a first part that lets the player walk back and forth until he reaches a small tower or some other protrusion that he must overcome by charging the jump, followed by a well located chasm that the player must avoid by jumping over it with a well timed jump.
The visuals and music of the game are fine and I do not have anything special to comment on them. The white outline of the character feels a little out of place, but because all the coins have also have it I think it is fine.