Top viewed games on Steam Spy for the last week
Undertale continues to dominate the list as developers are trying to understand its appeal.

1. Undertale

2. Punch Club

3. Squad

4. Life is Feudal

5. Dragon's Dogma: Dark Arisen

6. The Witcher 3: Wild Hunt

7. Counter-Strike: Global Offensive

8. Fallout 4

9. Underrail

10. Rainbow Six: Siege

I'm honestly surprised that Dota 2 is nowhere to be found. It's on #15.