Greyhat took me by surprise, created by 1 person, it feels very well-made. It has a compelling story that keeps you progressing forward. The hacks are all thought out and fun to piece together. There are wide range of difficulty settings, so you can play at whatever feels right for yourself. Some hacks on normal, were just too hard for me to do, but you can scale back difficulty right in the middle of the hack, which is a nice touch. For $12, this game is a steal and might just be my favorite indie game of the year thus far.
My video of the Prologue