Grand Father Paradox is a narrative-driven, time-bending game where players take on the role of a brilliant scientist attempting to prevent a cosmic catastrophe. As the sun collapses and Earth faces destruction, the protagonist travels back in time to alter the course of history.
Player is a brilliant scientist who tries to stop a timeline ending cosmic event where the sun collapses and earth gets destroyed. In order to stop this catastrophic event, the player goes back in time, but his grandfather, another scientist, believes in a better future in a different timeline and tries to stop him.
Player accidentally kills his grandfather, causing a grandfather paradox that causes other timelines to get destroyed together with the current timeline as well, resulting in a universe ending cosmic event. Player now needs to talk with timeline souls with timeline fragments to understand what happens and needs to make some decisions that will affect a timeline change for the future.
Souls will talk with player, giving clues about the story, because the player has amnesia. Player needs to complete the empty spaces in the story and try to save the world from cosmic disaster.
At the core of the design, player tries to stop timeline chaos by four different parameters (aggression, calm, balance and bonus) these parameters change the chaos level based on calculations and constraints. Parameters are being updated each time player interacts with a soul and after they are being applied they are set to zero again. There are four essential arguments the player can change with actions: aggression, calm and balance.
Players can see the results of their decisions inside the game as they make different choices. In this game, reflective design is specially added with visceral design, creating a unique combination for players. Reflective design creates a long-term impact, while visceral demonstrates fast, emotional results to the player.
Immediate visuals and sound are displayed to the player to engage them in making more decisions.