CS2 update adds spectator flashbang opacity control, map fixes

Valve released a Counter-Strike 2 patch via Steam on May 29, 2026, introducing sticker bookmarks for the IEM Cologne Major 2026 store, a spectator flashbang opacity control, stability improvements, and updates to the Ancient and Sanctum maps.

The sticker feature lets players mark favorite team and player stickers within the in-game Major store and return to them later when browsing or buying items.

For spectators, a new console variable, r_spectator_flashbang_opacity, allows adjustment of the flashbang effect while viewing matches. The flash effect for remote viewers now renders beneath the HUD, keeping on-screen information readable. The patch notes reference general stability improvements without listing specific crashes or performance issues.

Ancient received updated clipping to prevent use of certain boost spots that provided unintended angles. Sanctum was updated to the latest version from the Steam Workshop, aligning the official build with the version maintained by its creators. No separate layout or visual changes for Sanctum were detailed.

Ahead of the IEM Cologne Major 2026, a prior update added the tournament pass and player stickers, enabled souvenir items for trade-up contracts, and introduced various bug fixes.

The May 29 patch did not include balance changes or weapon tuning.