
1) Apple Design Awards recipient 2) IOS game 3) To blacken 4) Wii U eShop game
Found on
https://www.crosswordclues.com/clue/blek

Blek is a 2013 puzzle video game for iOS and Android by Kunabi Brother, a team of brothers Denis and Davor Mikan. The player draws a snakelike black line that recurs in pattern and velocity across the screen to remove colored dots and avoid black dots. It is minimalist in design, features excerpts of Erin Gee, and takes inspiration from Golan Levi...
Found on
http://en.wikipedia.org/wiki/Blek

• (v. t.) To blacken; also, to defile.
Found on
http://thinkexist.com/dictionary/meaning/blek/
No exact match found.