Tower Defense Simulator’s Frost Invasion Update launched on May 8, 2021. Its headline event ran for 20 waves and introduced the Sledger tower, but the release also included seasonal rewards, a separate Metaverse event, tower reworks, maps, and interface improvements. Frost Spirit returned in a later 2024 event; that does not establish that the original 2021 event is available now.
What was the Frost Invasion Update in Tower Defense Simulator?
Frost Invasion was a substantial multi-part release for Paradoxum Games’ Roblox tower-defense game, not just a winter boss encounter. The game’s core loop is described on its Roblox listing as: “Place units to defend against hordes of zombies!” The May 8, 2021 developer announcement centered on a limited event while also adding seasonal progression and broader game changes.
The 20-wave event and Sledger
The 2021 announcement described Frost Invasion as a 20-wave event and introduced Sledger. It listed Sledger for 500 Robux at the time. That is the announcement’s historical price, not a statement of the tower’s current price or availability.
Frost Season rewards
Frost Season let players earn shards in ordinary matches, with shard amounts varying by difficulty; the winter event offered the most, according to the announcement. Players could spend shards on Frost Crates containing skins for Minigunner, Pyromancer, Commander, and Ranger. Season progression also included crates and emotes.
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Other parts of the release
The update bundled a separate Metaverse Champions event with tower reworks, new or remade maps, a UI refresh, keybinds, map and targeting fixes, and other quality-of-life changes. The listed reworks included Minigunner, Militant, Rocketeer, Pyromancer, and Crook Boss.
When did Frost Invasion come out, and how many waves was it?
Paradoxum Games’ developer-forum announcement is dated May 8, 2021. It described the original Frost Invasion event as 20 waves. This figure belongs to that 2021 event and should not be confused with the later Frost Mode.
How do you get Sledger?
The 2021 announcement said Sledger could be bought for 500 Robux. Because that price comes from the May 2021 announcement, it should not be used as a guide to the tower’s present-day acquisition method or cost. The available information here does not establish its current status.
Is Frost Invasion back?
Roblox’s December 2024 winter spotlight reported that Frost Spirit had returned to Tower Defense Simulator. It described completing a Frost Invasion event mission, finding shards, and challenging Frost Spirit in true form to earn an Elite token. This confirms a later return of Frost Spirit and an event mission in 2024; it does not confirm that the original 2021 version remains playable now.
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How the 2021 event differs from current Frost Mode
Frost Invasion’s 20 waves describe the May 2021 event. Frost Mode is separate, later content. The Tower Defense Simulator Wiki’s v2.8.0 update record, dated August 28, 2026, says Frost Mode remains 40 waves, with Frost Champion appearing at wave 33; it also notes changes to the mode’s wave structure and increased multiplayer difficulty. The wiki says its update-log text is transcribed and may be incomplete or inaccurate, so treat these details as a reference record rather than a primary developer announcement.
| Content | Date and waves | What the source establishes |
|---|---|---|
| Original Frost Invasion event | May 8, 2021; 20 waves | Paradoxum Games’ developer announcement describes the event and Sledger’s 2021 listed price of 500 Robux. |
| Later Frost Spirit return | December 2024; wave count not stated | Roblox’s winter spotlight describes the event mission, shard collection, and Elite token challenge. |
| Frost Mode | 40 waves; Frost Champion at wave 33 | The Tower Defense Simulator Wiki’s v2.8.0 record is dated August 28, 2026 and cautions that its transcription may be incomplete or inaccurate. |
For the live experience and its current description, see the Tower Defense Simulator Roblox listing.
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