It's a Wonderful World
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Can I swap a cube already on a card for a Krystallium cube?
The designer allowed the swap when supply is exhausted, consistent with the rulebook's out-of-cubes note.
- Laboitedejeu · Designer · 2021-03-01
- It's a Wonderful World rulebook · Rulebook · PERFORMING A PRODUCTION STEP
Only when the supply of that resource has run out. Then you may replace a cube already placed with Krystallium, which frees the cube to keep playing. Otherwise Krystallium goes onto an empty space.