Tannimus

This is the first video game that has ever compelled me to 100% it. Every ending, every achievement. It was enjoyable from start to finish, and it is what I would consider the magnum opus of all combat systems.

Wow, I would never expect something like this to be created by anything less than AAA studios. I am a huge Morrowind, Oblivion, and Dark Souls fan. I can be rather critical of games that are similar to those, but this game has blown me away. This is one of a small handful of games that I would put in my GOAT list.