Great game. It's easy at first, but the difficulty increases to an appropriate level after a few floors. Challenging, and it's fun. Love being a ninja robot.
Many of you have been raging about the ads, and your discontent is justified.
What some of you don't know is that Nitrome is not a single person. Nitrome is a COMPANY that makes games. So, it only makes sense that they would sell ad space for their games, because that's what a company has to do.
Basically, if Nitrome doesn't put ads on their games, they get no money, therefore they can't make anymore awesome games!
So, stop with the complaints; it's 30 seconds out of your life, just enjoy the game.
Nice and chanlenging game, even though I couldn't beat it
Its a good game but its hard to play on a laptop.