CS2 Flashbangs and Molotovs Guide (2026): Pop Flashes, Fire, HE

Smokes hide a site; flashbangs and fire grenades take it. A flash wins the first duel, a molotov or incendiary empties the corner nobody wants to clear by hand, and an HE grenade finishes the damage or opens an enemy smoke. This guide covers how flashes blind, the pop and support flashes worth learning, the molotov and incendiary differences since Valve's 2024 Fire Sale update, the 2026 changes to how fire grenades behave, HE damage and the combos that open sites — with every number dated and sourced.

The blind, fire and damage grenades at a glance

Prices are Valve's in-game money; durations and damage are community measurements, because Valve doesn't publish them:

Every grenade kill pays $300, the same as a pistol or a rifle, and every grenade you carry drops when you die (Valve's Competitive config drops all of them) — so a dead teammate's flashes are yours to pick up. Smokes have their own smokes guide.

How flashbangs blind

A flashbang blinds every player who can see it go off, enemies and teammates alike. How long you stay white depends on how directly you face the burst and how close it is: looking straight at a flash gives the full blind — up to about 5 seconds per csdb.gg's grenade guide — while a flash at the edge of your view or behind you blinds far less or not at all. That's the single most useful fact about flashes, for both sides: you throw them where the enemy is looking, and you survive them by not looking.

One 2026 change you may have noticed is for spectators only. After a change made the flash effect cover an observer's whole screen, Valve moved the effect under the HUD so the killfeed stays visible and brought its opacity closer to CS:GO's (Dust2.us, 29 May 2026). In-game blinding for players wasn't part of that fix.

Pop, support, self and counter flashes

The rule BoostPirate gives every new player: a flash is wasted if nobody peeks in the next second. Throw it, then commit. If you throw a flash and wait, you've told the enemy you're coming and given them time to turn back.

How not to get flashed

1. Turn away on the sound. You hear the pin and the bounce. Turn at least 90° away — csdb.gg's guide gives the same number — then turn back.
2. Hold angles that are hard to pop. Deep positions where a flash has to come into your view early are safer than close corners.
3. Know the timings. Executes come with flashes; if you see smokes land, expect the flash next.
4. Fall back instead of peeking blind. If you're flashed, back off a step — the entry expects you on your angle.
5. Watch your own team. Team flashes lose more Premier rounds than enemy ones. Call your flashes.

Molotov vs incendiary

The two fire grenades do the same job for different sides. Valve's Fire Sale update on 23 May 2024 split them further: the incendiary's explosion and flames were reworked, its duration shortened, the area its flames spread over reduced, and its price cut from $600 to $500. For both grenades, "Height of the 'pillar' of flame for both Molotov and Incendiary grenade now decreases over time" (Valve's notes via esports.gg).

What fire is for

Fire does about 40 damage a second to anyone standing in it (csdb.gg), so nobody stays. That makes it a tool for four jobs:

Since a July 2026 update the bomb explosion also interacts with molotov and incendiary fire (Insider Gaming) — it matters only for the moment the round ends, but it's why fire near a detonating bomb behaves differently from before.

The 2026 fuse changes

Two small changes in 2026 made fire grenades more reliable:

1. 27 January 2026

   "Molotov/incendiary grenades that bounce off an enemy player have a one-time fuse extension added to prevent them from air-bursting." — a molotov that hits a player now lands and burns instead of popping uselessly in the air (players.com.ua, Dust2.us).

   source
2. 14 May 2026

   Valve fixed a case where a grenade throw could be cancelled near the end of the pin-pull animation (Esports News UK).

   source
3. 22 September 2026

   "ammo_grenade_limit_total setting now also enforces the total number of grenades a player is allowed to purchase in a round." — the four-grenade limit now caps buys too.

   source

HE grenades

The HE grenade ($300) does explosive damage that falls off with distance. csdb.gg's grenade guide measures about 98 damage to an unarmoured player and about 57 to an armoured one at point blank, inside a radius of roughly 350 units — so two HEs landing together on an armoured player are lethal. HEs have two other uses: they clear a large part of an enemy smoke for a few seconds, and they finish players your team has already damaged. On a CT anti-eco, an HE into a stack of unarmoured Terrorists does more than a rifle can.

Combos that open sites

These combos depend on who carries what. Our utility economy guide splits the grenades by role, and the map guides for Anubis and Cache show them in real executes. For entry players, the planned entry fragging guide goes deeper on flash timing.

Common mistakes

Practise pop flashes on an empty server with sv_rethrow_last_grenade and the trajectory preview from our practice commands guide, and check the prices of everything else in the weapon prices guide.