If a game requires multiple patches to quash major bugs (aka crashing, save corruption, freezing, or impossible to 100%), it was very obviously released in an unfinished state. Recent examples include Apotheon & Ether One on PS4. (There are still a few huge issues with Apotheon, but Alien Trap doesn't seem to care...so the game is finished yet broken.)
Technically, I'd say any game that hasn't received it's final patch or DLC is unfinished, but I think we're looking for a more negative definition.
A game like Mortal Kombat X is tricky. If all the DLC was released, it would be finished & hugely overpriced (with the core game being incomplete).







