- “Graduation Day”: Despite the fact that she is a junior cadet, Tilly is selected to be the Chief Engineer on the cadet training cruise.
- “Routine Maneuvers”: When the Tutorial Starship is boarded by Klingons, the player rescues Tilly in Engineering. She asks the player to assist with repairs.
- “Trial by Fire”: Tilly works to repair the ship.
- “The Shadow Knows”: Tilly provides commentary during the mission to the Arucanis Arm.
- “Children of War”: Tilly suggests a method of projecting a force field around the Corvan II facility. Later, she helps the player shut down the mine's unstable reactor.
- “Reporting In”: Back at Starfleet Academy, Tilly parts ways with the player.
- “Impossibility of Reason”: On board Discovery, Tilly appears briefly in the epilogue.
- “The Measure of Morality (Part 1)”: Tilly appears as a simulacrum.
- Sylvia Tilly at Memory Alpha, the Star Trek Wiki.
- Sylvia Tilly at Memory Beta, the non-canon Star Trek Wiki.