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 explains how to quickly 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 your surroundings. 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 extended periods to prevent missing opportunities to dig.

All Blast from the Past Event Rewards:
The Blast from the Past event offers a range 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
With a two-week extension added to the event, players have ample time to complete the challenges. However, early completion offers bragging rights!
This concludes the guide on finding Plathinum and Ironyum in The Sims 4. For future events and updates, check out the 2025 roadmap.
The Sims 4 is available on PlayStation, Xbox, and PC.