Hey there, thank you for taking the time to not only play my game but provide feedback. A new version (v0.1) is now available to download separate from the original version which hopefully addresses your issues. I've added something known as "coyote time" which allows players to input a jump even after they walk off a ledge for a brief period. This should stop it from feeling like the game is not registering your jump inputs. I have also added strong deceleration to the player while they are airborne and no direction is being input. Thank you again for the feedback.