There is no reset button: you age in real time, you die, and your heir carries on with only part of what you built, so every generation has to claw back the gap.
Buy estate upgrades to raise gold per year while your heir ages toward death. The estate passes on in full, but gold only carries over by your heir's Legacy trait, so you breed for better traits and push the lineage past the Legacy goal.
Death in an incremental game is normally a fail state, or absent entirely — the number only goes up.
Here the heir ages toward it, the estate passes on in full, and gold carries over only by the heir's Legacy trait, which is a game-mechanical version of primogeniture — inheritance by a single successor.
Making succession lossy is what gives the genre a shape it normally lacks. Idle games have no natural chapters; a lineage does, and breeding for Legacy means investing in the transition rather than in the peak, which is the decision real estates have always actually faced.
Heir Idle reimagines the incremental idle genre around mortality and inheritance, turning death into the core mechanic instead of a fail state. It is an original, free browser game on PlayPendium.