Secret Files: Tunguska
gameappid 40330 · released Oct 29, 2009
Unravel one of the greatest mysteries of our time! On the 30th June 1908 an explosion with the combined energy of 2000 Hiroshima bombs rocked the region of Tunguska in Central Siberia and felled over 6,000 square km of trees. The explosion could be heard from as far as 1,000km away.
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A step series: the price held until it changed. Shaded spans were discounted. Points marked as carried forward are inferred from the last observation before the window, not measured inside it.
| Date | List price | Paid price | Discount | Inferred |
|---|---|---|---|---|
| Sep 12, 2026 | $9.99 | $9.99 | None | observed |
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| Date | List | Paid | Discount |
|---|---|---|---|
| Sep 12, 2026 | $9.99 | $9.99lowest ever |