What PC game has the most engaging mini-games or side challenges integrated into the main experience?

[killamch89]

Some titles weave mini‑games or side challenges so elegantly into their core loop that you almost forget they’re optional. Which PC game, in your opinion, has the most engaging mini‑games or side challenges integrated into the main experience? Is it the hacking puzzles in Deus Ex, the fishing contests in Red Dead Redemption 2 via emulated PC ports, or the cockpit simulator side‑quests in Microsoft Flight Simulator?