Your 3 favourite custom maps

[UpperKEES]

I just started playing custom maps this week and noticed a lot of variation. I played (only) 13 of them till now and the quality is much higher than I expected.

I like them to be very tough and I was wondering which maps do other Creeper World addicts like, so:

Please name your 3 all time favourite custom maps (not created by yourself), the author and why you like these maps so much.