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METAL SLUG DEFENSE

METAL SLUG DEFENSE

“METAL SLUG”, the pinnacle of 2D action-shooting on NEOGEO returns in a brand new strategy game on Steam!

Released May 1, 2015 Developer SNK CORPORATION Platforms Windows Free to PlayAction2DTower DefenseMultiplayer
View on Steam ↗ Free (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

55.7%positive2,095 reviews
Recommended · 2 found this helpful

“An absolute blast with great artwork. The highest difficulty levels are nightmarishly ridiculous, but that's the only fault here... although your only volume adjustment is via Windows sound settings, which is weird.”

— a player, Steam review · 59 hrs played
Recommended · 2 found this helpful

“Very fun, I got hooked in no time, although it was obvious I really like these kinds of games”

— a player, Steam review · 4 hrs played
Not recommended · 0 found this helpful

“👎”

— a player, Steam review · 2 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-24 00:04 UTC · history via SteamCharts.

6playing at last check
1124-hour peak
389all-time peak
0 100 200 2016 2018 2020 2022 2024 2026 179 avg · May 2015

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

64achievements
5.8%median completion
3.8%rarest: World2 Boss Area 4: Capture "MARS PEOPLE"!
44.5% of players 26.4% of players 19.1% of players 16.6% of players 14.5% of players 13.4% of players 11.6% of players 11.4% of players 10.3% of players 9.4% of players 9.0% of players 8.4% of players 8.4% of players 8.0% of players 8.0% of players 7.9% of players 7.9% of players 7.5% of players 7.5% of players 7.0% of players 7.0% of players 6.7% of players 6.7% of players 6.6% of players 6.5% of players 6.4% of players 6.4% of players 6.3% of players 6.2% of players 6.1% of players 6.1% of players 6.0% of players 5.8% of players 5.8% of players 5.8% of players 5.7% of players 5.7% of players 5.6% of players 5.6% of players 5.5% of players 5.4% of players 5.4% of players 5.3% of players 5.3% of players 5.3% of players 4.9% of players 4.8% of players 4.8% of players 4.7% of players 4.6% of players 4.5% of players 4.4% of players 4.3% of players 4.3% of players 4.3% of players 4.2% of players 4.2% of players 4.1% of players 4.0% of players 4.0% of players 44.5% 0% most earned rarest
Almost everyone has
44.5%Area 1: "SOUTHEAST ASIA" conquered — Conquer all stages in Area 1: "SOUTHEAST ASIA"!
26.4%Area 2: "EAST ASIA" conquered — Conquer all stages in Area 2: "EAST ASIA"!
19.1%Area 3: "AFRICA" conquered — Conquer all stages in Area 3: "AFRICA"!
Rarest badges of honor
3.8%World2 Boss Area 4: Capture "MARS PEOPLE"! — World2 Boss Area 4: Capture "MARS PEOPLE"!
3.8%World2 Area 10: Free "HEIDERN"! — World2 Area 10: Free "HEIDERN"!
3.9%World2 Area 9: Free "MARY"! — World2 Area 9: Free "MARY"!

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

Freecurrent · sampled 2026-07-26 08:39 UTC
Freelowest since tracking began2026-07-11

Games like METAL SLUG DEFENSE

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Bloons TD Battles Bloons TD Battles 90.6% · 21,230 reviews shares Massively Multiplayer, Tower Defense, Free To Play, Multiplayer Battle Islands Battle Islands 70.0% · 1,529 reviews shares Tower Defense, Free To Play, Shooter, Multiplayer GUNS UP! GUNS UP! 80.0% · 3,333 reviews shares Massively Multiplayer, Tower Defense, Free To Play, Shooter Get Off My Lawn! Get Off My Lawn! 70.0% · 882 reviews shares Tower Defense, Free To Play, Shooter, Multiplayer BRAIN / OUT BRAIN / OUT 80.2% · 3,245 reviews shares Massively Multiplayer, Free To Play, Shooter, Multiplayer Zombie Defense Zombie Defense 80.2% · 920 reviews shares Tower Defense, Free To Play, Shooter, Multiplayer Ballistic Overkill Ballistic Overkill 70.6% · 2,029 reviews shares Massively Multiplayer, Free To Play, Shooter, Multiplayer Time Clickers Time Clickers 86.9% · 2,861 reviews shares Tower Defense, Free To Play, Shooter, Multiplayer

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAction, Free To Play
Player tagsFree to Play · Action · 2D · Tower Defense · Multiplayer · Strategy · Adventure · Pixel Graphics · Shooter · Massively Multiplayer · Arcade · Singleplayer (SteamSpy community voting)
FeaturesSingle-player · Multi-player · Steam Achievements · Partial Controller Support · Steam Cloud · Steam Leaderboards
LanguagesJapanese, English * , French, Italian, Spanish - Spain, Korean, Portuguese - Brazil, Russian, Traditional Chinese *
Achievements64
Estimated owners500,000 – 1,000,000 (SteamSpy)
Official sitehttp://game.snkplaymore.co.jp/official/metalslug_defense/
Minimum system requirements (PC)

Minimum: OS: Windows7 Processor: Intel Core i5 2300 and up Memory: 1 GB RAM Graphics: Intel HD Graphics Storage: 300 MB available space Additional Notes: OpenGL1.3/1.4/2.0/3.0