
What players like:
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Gameplay feedback:
Performance notes:
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Review evidence
A fun, addictive tower defense game with appealing visuals and solid overall enjoyment, though limited tower variety and frequent crashes and bugs hold it back.
Fun Tower Defense Gameplay: Many players find the core tower defense mechanics highly enjoyable and satisfying. The game is frequently described as one of the best tower defense experiences available.
Good Overall Game: General sentiment is positive, with many calling it a good or well-made game. The gameplay is often described as solid and enjoyable.
General Fun and Addictive: Many players find the game fun, entertaining, and surprisingly addictive. It is enjoyable both solo and with friends.
Appealing Visuals and Graphics: Graphics are frequently praised as good, beautiful, and well-crafted. Visual effects and colorful graphics enhance the experience.
Co-op Multiplayer Fun: Co-op mode, both local and online, is well-received and enhances the experience. Playing with friends makes the game more enjoyable and easier to survive.
Lack of tower variety: Multiple reviews mention that the selection of towers is too small, with few tower types available to build. This limits strategic options and replayability.
Tower defense lacks depth: The tower defense elements are considered shallow and not a true tower defense experience. Some say it feels more like a third-person shooter than a standard tower defense game.
High difficulty: The game is considered quite difficult, even on easy settings. Some missions are demanding and may frustrate players.
No online co-op support: The game claims to be co-op but only supports local co-op, preventing players from teaming up with friends remotely. Several reviews specifically note the lack of network or online co-op.
Frequent crashes and bugs: The game crashes frequently, with some experiencing 30+ crashes. Reloading from checkpoints increases crash likelihood, and verifying files does not fix launch issues.
Shooter Tower Defense Hybrid: The game uniquely blends tower defense with shooter mechanics, often described as a mix of bullet hell and twin-stick shooting. This genre fusion is the most frequently mentioned aspect.
Dynamic Enemy Pathing: Enemy routes can be altered by placing towers, demolishing buildings, or using barriers, adding a strategic layer. This mechanic is often praised for its tactical depth.
Play as Alien Invader: Players control an alien race invading Earth, which is a distinctive twist on the usual tower defense formula. This role reversal is highlighted in many reviews.
Controllable Alien Ship: Players can pilot an alien ship with multiple weapon modes, adding direct combat to the tower defense gameplay. This ship acts as a hero unit.
Co-op Mode Available: The game supports cooperative play for two players, both in campaign and survival modes. This feature extends replayability and is frequently mentioned.
Crashes and launch failures: A significant number of players report crashes, failure to launch, and errors. Some crashes occur randomly, while others happen in specific situations like the Japan level or after reloading checkpoints.
Optimization praised by many: Multiple reviewers highlight superb optimization, strong performance, and smooth frame rates. The game runs well even on modest hardware like integrated GPUs and portable devices.
Monitor and display issues: The game may open on the wrong monitor, start on a secondary screen, or crash when moved to the main screen. Some users see limited refresh rate options like 32Hz.
Stuttering and slow motion: Players experience stuttering and slow-motion effects, often linked to RGB lighting conflicts or Armoury Crate software. The issue can sometimes be resolved by disabling Aura lighting effects.
Long loading times: Reviewers report long initial startup times and extended loading between scenes, sometimes taking a minute or two. The menu may also fail to load until the game is force-stopped.
Ideal for tower defense fans: Many reviewers highly recommend the game for fans of tower defense, praising its engaging gameplay and hybrid action elements. It stands out as one of the best in the genre.
Strong recommendation to buy: A large number of reviews give a straightforward recommendation to buy the game, often without reservations. Players find it worth the purchase and enjoyable overall.
Positive but vague recommendations: Several reviews give a thumbs up without specific details, simply stating it's recommended or worth playing. These general endorsements contribute to the overall positive sentiment.
Buy on discount: Several reviewers suggest waiting for a sale or buying at a discount, indicating the game is a good value when priced lower. Some specify ideal discount ranges like 25-50% off.
Great for arcade and shooter fans: Fans of arcade games, bullet hell, and shoot'em ups will find enjoyment here due to the fast-paced action and twin-stick shooting elements. The combination of genres appeals to these players.
Community fair range: $10.00 - $20.00.
Game completion: 57.6h.
Story completion: 14.0h.
Session length: 0.6h.
Players broadly report fun from the tutorial and first missions, with a strong twin-stick tower-defense loop and co-op highs, but many say the mission structure and gameplay loop become repetitive over time.
Friction: Local co-op requires extra controller or mouse, and online co-op is unavailable; Bugs can block co-op progress past the first mission; Repetitive route-changing movements can cause wrist ache; Default plasma gun and bombs are too weak for late-game enemies; Multiplayer resource earnings are stingier than single-player; Longer waves and mission structure can feel repetitive or drag.
Unlock drivers: Unlocking upgrades and new towers opens new strategic possibilities; Upgrades enhance both the player ship and defensive structures; Switching to laser and rockets helps handle late-game enemies; Practicing in the demo helps players become good at the game; Getting past Nigeria with two Tarantula MK 6s makes it fun; Map progression gives infinite time to redesign the maze.
Achievement Completionist: Replays campaign missions to chase gold rankings, grinds harder difficulty tiers and survival mode, and lines up co-op partners specifically to unlock co-op achievements. Motivation: Reaching 100% completion - all achievements, gold medals, and survival clears - rather than just finishing the story. Stance: buy.
Tower Defense / Shoot-'Em-Up Hybrid Enthusiast: Builds maze-like tower lines and switches tower types by matchup while actively flying the alien ship to plug gaps and cover leaks. Motivation: Experiencing the novelty of merging active ship combat with classic turret building and pathing. Stance: buy.
Traditional Tower Defense Purist: Expects to hold lanes with carefully placed, easily managed turrets and dislikes being pulled across the map to fight enemies by hand. Motivation: Winning through pure tower strategy and resource planning without being forced into manual combat. Stance: sale.
Across the Windows <8GB VRAM and 8-11GB VRAM cohorts, the game is generally reported to run well, with only minor optimization caveats.
Windows <8GB VRAM: positive. Players report excellent shooting, novel tower-defense gameplay, rich choices, and strong optimization; one notes survival mode may be unoptimized but had no main-campaign problems.
Windows 8-11GB VRAM: positive. The cohort reports positive performance overall, with a suggested fix of updating Armoury Crate if slowmo or stuttering occurs.
Steam Deck: Steam Deck feedback is mostly positive: users describe the game as an excellent fit for Deck, with full controller support, rebindable controls, and several reports that it runs great. The main friction is configuration-related, as one user needed Proton-7.1-GE-2 with specific launch options. Stability is not flawless: reports mention a DLC crash from tower data overflow, no auto-save, occasional crashes, WASD unresponsiveness, and high-wave crashes on console. There is no evidence of small text, external launchers, battery drain, or anti-cheat blockers. Because it is playable with Proton and launch-option tinkering and has some stability caveats, the score is 45.
Linux and Proton: Linux and Steam Deck feedback is positive: the game runs without issues on Proton-7.1-GE-2 after disabling esync/fsync via launch options, and it performs excellently on Steam Deck. The only Linux-specific requirement is a minor Proton GE launch-option tweak, not a blocking compatibility issue.
DLC available and cheap: The game offers paid DLC that extends the experience with additional levels and content. The DLCs are often available at low prices or during discounts.
Co-op and survival modes: The game includes local co-op and survival modes as additional gameplay options beyond the main campaign. These modes can be played solo or with a friend.
Campaign length around 12 hours: The base campaign consists of 14 missions and takes approximately 12 to 13 hours to complete on normal or hard difficulty. The total playtime with DLC and modes is about 10-15 hours.
Compared to Defense Grid: Some reviewers compare it unfavorably to Defense Grid, which they consider the pinnacle of tower defense. Others compare it to Gemcraft and Warcraft 3 custom maps.
Good graphics for 2017: The game's graphics are considered top-tier for a 2017 release and remain pleasant in 2022. Visuals are a strong point.