Overview
A flashbang creates a short moment when an affected player has difficulty seeing an approaching threat. Exposure depends on the situation, including the direction the player faced and whether the view was blocked. Throwing the grenade does not guarantee that every player nearby is blinded: someone who turns away or has cover may still respond.
The grenade can blind its own thrower or a teammate. Warn the team about the timing and approach before it pops. An unexpected team flash interrupts the very push it was meant to support.
Supporting a play
An attacking player can throw a flash before teammates cross an exposed angle or enter a site. The timing should let the entry move while the defender is still impaired. If it pops too early, the defender can turn away and be ready for the crossing; if teammates move too late, the effect may have worn off.
A defending team can use a flash to interrupt an entry or cover a short reposition. The grenade creates an opportunity, not a wall. Opponents can keep moving through the area, spray a likely position or wait for sight to return. Use the moment to challenge with a teammate or retreat into a safer position.
Throws & coordination
Different throw strengths and trajectories create different distances and timing. A wall or ceiling can affect where a flash pops. Practice on the relevant map so teammates do not face it and so the burst catches the intended angle. A known lineup is useful only if the team understands when to act on it.
Name who is throwing and who takes the angle. Keep enough utility for later in the round, particularly if a site take may turn into a retake or post-plant defense. Link flash timing to the movement it supports.
CS2 applicability
This entry describes the CS2 team-play role. Exact duration, price, throw distances and numeric effect depend on game data and may change. Keep those values in a version-dated entry after comparing the CS2 source.
Remote spectator flashbang opacity
On May 28, 2026, Counter-Strike 2 added the r_spectator_flashbang_opacity convar to control how opaque a Flashbang effect appears to remote spectators. This is a spectator presentation control, not a way for a player in the match to reduce their own flash exposure or alter the flash duration applied to competitors. The patch gives the exact convar name but does not specify a value range or default; use the current CS2 command help for accepted values.
The same update changed remote-spectator rendering so the Flashbang effect appears underneath the HUD. Interface elements therefore remain layered above this spectator-only effect. This does not change the flash effect in a player’s view or the information available to a live spectator beyond its rendering order. See HUD for the display layer.
May 21, 2026 IEM Cologne Major update
The May 21, 2026 update increased the amount of Flashbang effect shown to spectators using the in-eye view. This is an observer presentation change intended for the spectator’s view of a followed player; it does not increase the flash applied to a competitor, change blindness duration, or alter a player’s own flash protection. The patch gives no numeric opacity or intensity value.
Occluded flashbang particle visibility (April 29, 2026)
The April 29 update adjusted the opacity of the flashbang particle-effect sprite when the effect is fully occluded. This is a rendering adjustment for a flash effect hidden behind geometry; the note does not change flash duration, blindness, throw behavior or the effect of a partially visible flash. It is separate from the grenade’s gameplay exposure rules and should not be interpreted as a balance change. The update provides no numeric opacity values or graphics setting instructions.