Best Marvel Snap Grand Arena Showdown Decks: Win Rates from Real Games

This page locks the SnapComplete deck stats view to Grand Arena Showdown, a Limited Time Game Mode (LTGM): every distinct 12-card deck tracked players ran in the mode, with win rates, games played, and player counts. Grand Arena Showdown is a limited-time special event that mashes up Grand Arena and Sanctum Showdown: pick a Champion, build a deck around them, and score points with Sanctum Scoring instead of racing for Cubes. The event runs its own reward track with Free and Premium passes.

Grand Arena Showdown is a rotating Limited Time Game Mode: it runs in scheduled event windows rather than year-round, so recent time filters only show data while an event is live. The most recent run started Jul 22, 2026. The Grand Arena Showdown mode guide covers the schedule, rules, and rewards in detail.

The companion Grand Arena Showdown card stats page shows per-card performance for the same mode.