Unlocking the "Inventing the Past" quest in The Sims 4's Blast from the Past event requires locating Plathinum and Ironyum. Fortunately, this is a straightforward process.

This guide shows you how to easily find these resources:

To obtain Plathinum and Ironyum, simply locate areas with rocks and dirt mounds – parks are ideal. Pause the game to carefully scan the environment. Once you spot a suitable mound, interact with it to dig. It might take a few attempts, but you'll eventually unearth the necessary resources.

If you're struggling to find dig spots, speeding up in-game time can help generate more rocks and mounds. However, avoid leaving the game sped up for too long, as you risk missing your opportunity to dig.

All Blast from the Past Event Rewards:

The Blast from the Past event offers a wide array of rewards across four weeks. Here's a summary:

• Week 1: Retro Deco Phone Set, Relevart Time Walkers, The Yesterday Set floor tiles, The Future’s So Bright “Sun” Glasses, The Fun-Fun Inflatable Set, Part One
• Week 2: Get Up! Alarm Clock, Be “The Emit” full body outfit, Bigger Gatherings Banquet, The Relevart Neck Stabilizer bow tie
• Week 3: The Fun-Fun Inflatable Set, Part Two, Dina Caliente’s LBD, New Retro Station Songs, Sticky Fingers aspiration
• Week 4: Surprise Birthday Cake, The ElectroDance Floor

While you have some leeway, completing the quests promptly is recommended to secure these rewards early. The event has been extended by two weeks, even after all quests are available.

This concludes the guide on finding Plathinum and Ironyum in The Sims 4's Blast from the Past event. For future Sims 4 updates and events, check out the 2025 roadmap.

The Sims 4 is currently available on PlayStation, Xbox, and PC.