Deus is a simulator of particle physics whose aim is to simulate the genesis of the Universe, from the Big Bang (t → 0) to the dark ages (t ≈ 370,000 a). It can be adjusted in terms of the laws of physics which are applied, ranging from classical to quantum, allowing for sparing of computing resources for lower-range hardware and visualization of simulated scenarios wherein only Newtonian physics are employed versus those in which quantization is taken into consideration.

Our current, state-of-the-art knowledge is still unable to state, precisely, how the Big Bang occurred — specifically up until the Planck epoch (t = 10⁻⁴³ s).

Some parts of the process of developing Deus are documented by the author himself in his video series Deus: Simulando o Universo (Deus: Simulating the Universe), in which the thinking behind the overall structure of the project is explained and important concepts regarding the physics themselves are taught.

1. Bernardo Benfeitas and Miguel Aloisio, with both having presented the movie Interstellar, one of the greatest inspirations for Deus, to the author;
2. David Tong and Sean Carroll, professors by whom the author was introduced to quantum mechanics in their respective lectures The real building blocks of the Universe (Discourse) and A brief history of quantum mechanics; and
3. Savannah Brown, from whom the author learned about The Last Question by Isaac Asimov, through her essay 20 minutes on whether or not the world is getting worse.

These are the people who have, directly or indirectly, influenced this project from its conception, without whom it probably would not exist.