You are right. The gravity is not very realistic, but this is a game, and games can be VERY unrealistic, so maybe the game is supposed to be unrealistic?
I pwned the whole game:) This is one of the best games that i have ever played, and i wanna play it more, but it gets a little bit boring when all the achievements are done, then i rather play some other games instead...
 "Achievement Unlocked"){kind=icon}
 "Hill Defender"){kind=icon}
 "The Impossible Maze"){kind=icon}
 "Snake"){kind=icon}
 "Drift Runners 2"){kind=icon}
 "Bubbles"){kind=icon}
 "Simple Maze Game"){kind=icon}
 "American 8-Ball Pool - Beta 1"){kind=icon}
 "Miami Shark"){kind=icon}
 "Spin The Black Circle"){kind=icon}
 "CycloManiacs"){kind=icon}
 "faze"){kind=icon}
 "QWERTY Warriors"){kind=icon}
 "Z-Rox"){kind=icon}
 "Car Chase-a-Race"){kind=icon}
 "High Speed Chase 2"){kind=icon}
 "Meat Boy"){kind=icon}
 "VVVVVV Demo"){kind=icon}
 "Switch"){kind=icon}