METAL SLUG DEFENSE

About

METAL SLUG DEFENSE is a single player and multiplayer strategy game with warfare, comedy and science fiction themes. It was developed by SNK CORPORATION and was released on May 1, 2015. It received neutral reviews from players.

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

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49%

Audience ScoreBased on 738 reviews

story9 positive mentions

monetization24 negative mentions

Fun and addictive gameplay with a unique tower defense style using classic Metal Slug sprites and characters.
Playable and enjoyable even without spending money; free units are sufficient to complete the main campaign and achievements.
Nostalgic appeal and faithful use of Metal Slug art, music, and characters that fans appreciate.

Heavily pay-to-win monetization with essential units locked behind expensive DLC packs, unlike the mobile version where units could be bought with in-game currency.
Poor PC port with mobile-oriented controls (tap and drag), no hotkey support, lack of resolution options, and UI not optimized for PC.
Energy (sortie points) system limits playtime with repetitive grinding and lack of meaningful updates; multiplayer is mostly dead or unbalanced due to DLC power disparity.

story
78 mentions Positive Neutral Negative
12%
82%
6%
The story in this tower defense game is considered basic and lacks depth, with many missions feeling unbalanced and sometimes unfairly difficult without premium units or purchases. Progression is hindered by resource limitations, grind-heavy mechanics, and time gating, leading some players to view the experience as a tedious cash grab rather than a compelling narrative. Despite featuring familiar Metal Slug characters and numerous missions, the story presentation and integration are minimal and often overshadowed by gameplay and monetization issues.
- “But despite that the gameplay is fun and follows the plot of the story and we can see the levels and the worlds in other ways.”
- “If you like Metal Slug universe and wave vs wave type games, this game was fun, complete the story and get all achievements.”
- “Well over 200 missions/quests, plenty of free units if you don't want to spend money on DLC, truly fantastic netcode with 0 lag and the option to fight 2v2 as well as 1v1.”
- “It's just... not good for a tower defense style game. The third mission suddenly throws a tank at you that can snipe your soldiers faster than you can produce them, and it doesn't even prepare you for it.”
- “The whole game feels like a cash grab. There will be missions where you keep losing because you don't have the appropriate unit, character, or vehicle to deal with the mobs of enemies they throw at you.”
- “Originally a mobile game, this was actually pretty good at some point but then developers ruined it by adding single-player missions that could only be beaten by using units upgraded with real money. Units had a level 20 cap that could only be raised with medals, the game's premium currency.”
gameplay
64 mentions Positive Neutral Negative
22%
58%
20%
The gameplay is a mobile-style tower defense and tug-of-war mechanic that is simple, repetitive, and often slow-paced due to energy/stamina restrictions and pay-to-win elements. While some enjoy the nostalgic Metal Slug art and basic strategy with unit micromanagement, many find it grindy, shallow, and heavily limited behind expensive paywalls, making the Steam port less appealing than its mobile counterpart. Overall, it offers modest enjoyment in short bursts but lacks depth, balance, and innovation.
- “It's a beautiful work of art combined with satisfying gameplay.”
- “Many units have special moves you can click to use, adding a bit of strategy and timing to the gameplay.”
- “The gameplay itself is quite simple and fun to play with many missions, various strategies you have to play in order to defeat each stage.”
- “It trades the fast-paced, skill-based action of the originals for a slow, mobile-style tower defense game filled with pay-to-win mechanics.”
- “Gameplay consists of basic screen tapping to do simplistic soldier defense battles, where you will quickly find you're time/pay-gated and must buy mobile peasant in-game currency with real world money to progress.”
- “The gameplay feels like it was thrown together in an afternoon, there's no real attempt at balance, and everything is behind a paywall.”
graphics
37 mentions Positive Neutral Negative
22%
70%
8%
The graphics retain the classic pixel art and animation style of the original Metal Slug games, appealing to fans of the series with nostalgic visuals. However, the port shows little to no enhancement for PC, resulting in low-resolution, pixelated graphics that do not scale well on larger screens and lack updated touch-to-keyboard interface adjustments. Overall, while the art style is charming and faithful, the graphics feel outdated and under-optimized for modern platforms.
- “Metal Slug has always been a side-scrolling run and gun action game known for its charm, graphics, animation, and quirky style.”
- “+ Soundtrack and art style along with the animation are all like the classic Metal Slug games.”
- “Great pixelated visuals like the usual from SNK Metal Slug series.”
- “The port screams lazy: there is no real difference between playing this on an Android emulator than on Steam. The graphics didn't get any rework, so they look pixelated even in the lowest resolution. They didn't bother changing most of the text, so you can still find instructions telling you to 'tap the screen,' and there are no new functions or shortcuts added to make use of your keyboard. Click equals tap and that's it.”
- “Even in windowed mode, the jaggies and low-res graphics will slice your eyeballs, and the game's menus and movement are still very much based around tapping and dragging.”
- “But I don't understand why they don't remake graphics before porting to PC.”
monetization
36 mentions Positive Neutral Negative
8%
25%
67%
The monetization of this game is widely criticized as an aggressive and blatant cash grab, heavily reliant on microtransactions that push players toward pay-to-win mechanics. Many reviewers feel the PC port is a lazy, overpriced adaptation of a mobile game with expensive in-app purchases and limited content, detracting significantly from the experience and betraying the original franchise's spirit.
- “If you wanted to play a nice mobile game but did not like microtransactions then this is not a bad pickup.”
- “In-game purchases aren't really pushed on the player either.”
- “Fun mechanics, has some microtransactions.”
- “Metal Slug Defense is a pay-to-win/pay-to-play mobile app that's been dumped on Steam as a nasty, greedy cash grab from morally void mobile app developers.”
- “This game is an awful pay-to-win; it isn't a Metal Slug game and the fact that all the microtransactions total more than $100 is scary.”
- “The whole game feels like a cash grab. There will be missions where you will keep losing because you do not have the appropriate unit, character, or vehicle to deal with the mobs of enemies they throw at you.”
grinding
31 mentions Positive Neutral Negative
3%
97%
Grinding in the game is a significant and often tedious aspect, with players needing to repeatedly replay levels to unlock units and progress, leading to a pay-to-win feel for some. While some find it manageable or optional, others criticize the game's reliance on grinding and RNG, which can make advancement feel slow and repetitive. Autoplay features and DLC can ease the grind but may come with additional costs or frustrations.
- “Freeing POWs for unlocks is very tedious, and I've had to replay some levels 20+ times to get them due to RNG.”
- “There is little strategy involved; winning requires grinding money from early levels to upgrade units or paying premium currency for overpowered items, which is poor game design.”
- “I used to recommend the mobile version as a good free-to-play example, but grinding through levels again and then paying to get units I've already acquired on other platforms feels like an insult.”
humor
16 mentions Positive Neutral Negative
100%
The game delivers a humorous experience through its playful Metal Slug-themed tower defense gameplay, featuring funny units, missions, and quirky battles. While some find its small-scale, repetitive action amusing and nostalgic, others note that the humor extends even to its flawed monetization and challenging difficulty. Overall, it is praised for blending comedy with engaging, lighthearted fun.
- “A very fun and unique take on the tower defense game infused with Metal Slug characters and humor.”
- “It's a nostalgia trip and a delightfully funny action romp that could eat your time away.”
- “For what it is, it is pretty damn good, with a fantastic and hilarious unit variety.”
music
13 mentions Positive Neutral Negative
23%
54%
23%
The music in the game is largely composed of classic tracks from older Metal Slug titles, which many fans find nostalgic and memorable. While the soundtrack and art style are praised for maintaining the original series' atmosphere, some players note the lack of new music and the inability to adjust audio settings as drawbacks. Overall, the music is a strong point for Metal Slug enthusiasts, though it may feel repetitive or unoriginal to others.
- “The soundtrack and art style along with the animation are all like the classic Metal Slug games.”
- “One of the things that makes me keep playing is the soundtrack of the game; it has some really memorable tracks. Hope it had more.”
- “Metal Slug fans will appreciate the old school art style, sound, and music pieces.”
- “There's no option to turn off the music or the sound, it's both or nothing, and I always hate that.”
- “The combat is unengaging, the little bit of music I heard was obnoxious and just unmatched, the interface is crap... jesus.”
- “Basically the free OST from all the Metal Slugs, but you have to play the game in order to listen to those good ol' classic tunes.”
optimization
3 mentions Positive Neutral Negative
33%
67%
The game’s optimization is primarily tailored for touch screen controls, providing a smooth experience on those devices. Performance-based rewards in missions suggest some consideration of gameplay efficiency, though overall optimization may feel limited beyond touch interfaces.
- “Some missions even award units based on performance.”
- “From childhood memories to garbage optimization.”
- “The controls are optimized for touch screens only.”
atmosphere
3 mentions Positive Neutral Negative
67%
33%
The game's atmosphere closely captures the original Metal Slug feel with authentic animations and music, appealing to true fans. While it may not perfectly replicate the original, it still delivers a nostalgic and enjoyable experience.
- “For free you aren't losing anything by playing it, and a true Metal Slug fan will appreciate the atmosphere.”
- “I don't say that with tearful nostalgia blinding me, but the animations, the music, the atmosphere, all of it comes from the Metal Slug series and it still holds up here.”
stability
3 mentions Positive Neutral Negative
100%
The game suffers from frequent crashes, freezes, and numerous bugs, leading to a frustrating and unstable experience. Users also note poor optimization, especially on PC, which contributes to stability issues.
- “Can't play the game, crashes every time and freezes.”
- “Miserably translated, overpriced character packs, short repetitive campaign, unbalanced online play, and buggy.”
- “When Resident Evil 6 came out, the graphics were off and it was acting super buggy because it wasn't prepared for PC.”
emotional
2 mentions Positive Neutral Negative
100%
The game offers some challenging enemies but lacks truly impactful or emotional moments. Additionally, the DLC is considered overpriced, diminishing its appeal even for dedicated fans.
replayability
2 mentions Positive Neutral Negative
100%
The game offers strong replayability, with well-designed levels that provide ongoing challenges and sustained entertainment for players.
- “It's a great game with great replay value and entertainment.”
- “Levels are designed for replayability and are structured to give a challenge based on which.”