This game was terrible in the beginning, but improves substantially at the end when you're finally able to afford to fly. Pity I had to grind so much before it became interesting.
Nice game, however, the levels are in the wrong order. Since you have to submit an actual word, having a letter revealed actually limits the amount of information you can obtain, at least for a human player. As an aside, it'd be nice to know what word list the developers are using.
Camera controls need work. Sometimes arrow keys are responsive, other times they don't do anything. Mouse scroll is a poor choice when the mouse is the primary input method as well. A zoom in/out feature would be a significant improvement.
Some buggy scoring leads to frustration, especially when multiple clears don't trigger properly. However, an exploitable glitch in the controls renders the game no more then a test of patience.
A nice start. If you're going for a Parkour feel to the game, you may want to implement some kind of acceleration into the game, and get rid of the mario style jumping. A good example of what I mean would be N.
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 "Record Tripping"){kind=icon}
 "Wordspector"){kind=icon}
 "Icebreaker"){kind=icon}
 "DropSum v2"){kind=icon}
 "GeoSketch"){kind=icon}
 "Easter Eggs"){kind=icon}
 "Parcour jr."){kind=icon}
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