Some players reported that it requires to many plays(more than 2 level complete) to unlock the next level. (Fails do not count)
They don't like to play the same level more than 2 times. (Fails do not count)
For that reason;
XP amount for each level increased to 125.
So players can unlock the next level, after succesfully completing only 2 times their current level.
Why completing 2 times?
Each level contains many anomalies which cannot be seen in a single or even in multiple game plays.
So at least two plays in each level is better for a good XP.