Extremely laggy
Well, it's frustrating, I spend like 15 minutes on the first level because i had a framerate of 1 frame per minute at the end and i didnt manage to finish it since the ball was stuck between letters, arrggg.
If it can help you, I think this is a memory problem for computers that doesnt have a lot of ram (<1Go and personnally i have (only) 384Mo of ram). It's like if the game was saving a lot of data (?) in memory while we play because it's start "relatively" well (~1fps) and become slower and slower by the time and firefox.exe went to 200Mo (when it is usualy under 100Mo).
Oh and I rated it 4 stars since the game seems to be correct if we dont think about the incredible lag.