← All Metal Slug variants

Massed Flies Metal Slug

Massed FliesUnusual5h ago
Sell price
13 keys, 23.22 ref
Buy price
11 keys, 39.66 ref
In keys
13.4 keys
In USD
$30.21 at the Steam key rate

Community price on backpack.tf: 15.0 keys, last changed 2026-05-03 (4mo ago). The live quote above, 13.4 keys, is 11% lower and last moved 5h ago. They are different measures: the quote is what traders and bots are asking and bidding on the classifieds right now, and it moves for thousands of items every day; the community price is a suggestion accepted by vote, which changes only when someone argues it should. A quote well away from the vote is usually a price that is about to be re-argued. Community prices from backpack.tf, read under an hour ago.

Price history

26 observations

Interactive chart. Press the left and right arrow keys to move along the series, Home or End to jump to either end, Escape to clear.

The key axis converts at today's rate. Prices are recorded in metal, so a line that is flat in keys followed the key rate rather than standing still.

Massed Flies Metal Slug sell price, 2025-09-25 to 2026-09-05: 26 observations, from 16.2 keys to 13.4 keys.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC16.2 keys13.2 keys
30 SEP 2025 · 20:47 UTC16.2 keys13.3 keys
9 OCT 2025 · 08:30 UTC15.5 keys13.9 keys
19 OCT 2025 · 20:17 UTC14.7 keys13.3 keys
25 OCT 2025 · 16:38 UTC14.0 keys12.6 keys
10 NOV 2025 · 00:39 UTC14.9 keys13.4 keys
28 JUN 2026 · 15:12 UTC6.60 keys5.78 keys
5 JUL 2026 · 01:12 UTC11.6 keys10.0 keys
11 AUG 2026 · 15:12 UTC11.7 keys10.2 keys
22 AUG 2026 · 10:09 UTC11.8 keys10.2 keys
24 AUG 2026 · 18:09 UTC11.7 keys10.1 keys
24 AUG 2026 · 20:09 UTC11.7 keys10.2 keys
25 AUG 2026 · 04:09 UTC11.7 keys10.2 keys
25 AUG 2026 · 08:09 UTC11.7 keys10.2 keys
25 AUG 2026 · 10:09 UTC11.6 keys10.1 keys
25 AUG 2026 · 12:08 UTC11.7 keys10.2 keys
25 AUG 2026 · 14:09 UTC12.4 keys10.8 keys
25 AUG 2026 · 20:09 UTC12.0 keys10.4 keys
27 AUG 2026 · 00:09 UTC11.7 keys10.2 keys
4 SEP 2026 · 06:08 UTC12.5 keys10.9 keys
4 SEP 2026 · 20:07 UTC12.7 keys11.0 keys
5 SEP 2026 · 00:08 UTC12.2 keys10.6 keys
5 SEP 2026 · 02:08 UTC12.8 keys11.1 keys
5 SEP 2026 · 06:08 UTC12.3 keys10.7 keys
5 SEP 2026 · 12:10 UTC12.3 keys10.7 keys
5 SEP 2026 · 14:08 UTC13.4 keys11.6 keys

Price history in numbers

26 readings since 25 Sep 2025

Over the last 30 days the Massed Flies Metal Slug's sell price ranged from 11.6 keys to 13.4 keys and is up 14.2% after 17 moves. Over a year it ranged from 6.60 keys to 16.2 keys (down 17.4%). Today's 13.4 keys sits in the upper third of its range: the lowest we have recorded is 6.60 keys (28 Jun 2026) and the highest 16.2 keys (30 Sep 2025). The price has moved 25 times since we began recording it — about once every 14 days.

WindowLowHighChangeMovesReadings
30 days11.6 keys13.4 keys+14.2%1718
90 days6.60 keys13.4 keys+102.6%1920
a year6.60 keys16.2 keys−17.4%2526

Details

SKU30028;5;u12
Last price change2026-09-05 14:08 UTC
Key rate when recorded63.11 ref

Same effect, other items

the effect across the catalogue

Other effects on the Metal Slug

same item, different effect
ItemValueUpdated
Green Black Hole Metal Slug207 keys11h ago
Roboactive Metal Slug173 keys4d ago
Amaranthine Metal Slug136 keys6d ago
Burning Flames Metal Slug117 keys7h ago
Death at Dusk Metal Slug106 keys3d ago
Scorching Flames Metal Slug91.7 keys7h ago
Sulphurous Metal Slug88.3 keys7h ago
Phosphorous Metal Slug82.0 keys2d ago
Time Warp Metal Slug68.5 keys28d ago
Sunbeams Metal Slug63.4 keys9h ago

Priced similarly

across the catalogue