This game by far is the most intense and exciting rollercoaster game I played in my browser for quite some time. The graphics are good, excellent in fact. The musical scoring gets the player in the mood for adventure and challenge. The environment is astonishing in both visual and ambient sounds.
One problem I have though is when I am playing for quite a while on miniclip's website, it gets laggy that the controls becomes less responsive resulting in my premature doom (lols). But then again, the problem could be at my end, like my PC's graphics cannot hanndle the game or its a browser issue. Other than that minor issue, I really enjoyed it and spent a good hour and half playing it. Meanwhile, as per Rail Rush walkthrough, here are some footage from my own gameplay on my PC which reveals some secret levels in the game.