best game based on Unity?

AdVenture Capitalist, I guess?

《轩辕剑外传：穹之扉》
《仙剑奇侠传六》

Hearthstone?

Snakebird...

Wasteland 2 :>

best game on unity is the game you made with it :D

Underworld Ascendant, next year:

https://www.youtube.com/watch?v=NLkX_s2euRk

https://www.youtube.com/watch?v=DSHhPDDLUPw definetly best looking game right now

Shadowrun Hong Kong is what I am playing atm. Kerbal and Pillars I think would get a lot of votes as well.

Despair, bestest unity game.

For now, I'll go with Shadowrun Returns and it's follow-ups. Because those I've actually played.

There's probably other good ones that I'm unaware of though, but that is one solid piece of evidence that the engine can be used for much more than DH-grade asset-flipped shovelware.

Vapour

Pillars of Eternity or Cities Skylines? Shadowrun & Wasteland 2 are also strong contenders

Besiege. It's on unity 4, but the developers are upgrading it to unity 5. The game looks gorgeous.