This game does NOT get harder AFTER 50k. The game REPEATS itself. My leg was shaking uncontrollably for some reason b/c of the position I was sitting in for this video and I play with the Ipod on my leg so sorry in advance. Also, just because the game on my video looks like the same difficulty or even easier (I recorded in an area where I knew there was no monsters) as your game at 50k does not automatically make it a hack.
This was the former legitimate world record for over 50 days.