Rubik's 50th Anniversary Logo
When your brand is one built around a toy (even a challenging one), it's not surprising to see so much color and a playful vibe in their original logo. So when Rubik's celebrated an anniversary they took that same colorful angle, turned their normally 3D shape into a 2D figure to better stand in place of the number zero, and added a number 5. That's all they need for a simple, effective mark.
Source:
https://www.licenseglobal.com/toys-games/rubiks-cube-at-50-spin-master-announces-anniversary-collabs