Whiteout Survival Frost Star Top-Up: Max Value 2026
The highest-value top-up window runs March 13–18, 2026 — the $4.99 Starter Pack yields 524 FS, the $99.99 Mid-Tier Pack yields 10,499 FS. Spend first on Monthly Card, Extra Construction Queue, and Gen15 hero bundles. Stack free gift codes before spending a dollar.