
A mech-based Vampire Survivors / Tower Defense hybrid where almost every run ends in defeat, but each one makes you stronger. Customize your mech, unlock global perks, and survive as many waves as you can before the swarm overwhelms you.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0/day in the week to Aug 3 → 0/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Guard Protocol is a mech-based Vampire Survivors / Tower Defense hybrid where survival isn’t about winning, it’s about lasting as long as you can. Each wave grows stronger, every run ends in defeat, and the only question is: how long can you hold the line?
Customize your mech across every system, legs, body, engine, generator, weapons, and shoulder mounts, to define your own playstyle. Between runs, use resources earned from fallen enemies to unlock permanent global perks and upgrade your mech’s core components, expanding your tactical options for the next attempt.
Each run offers randomized perks and augments that shape your strategy on the fly: faster reloads, explosive shells, piercing rounds, electrical damage, and more. The right combination can turn your mech into a walking fortress, but no build lasts forever.
Battle through endless waves of enemies, mini-missions, and boss encounters that escalate with each cycle. Every defeat makes you stronger, pushing you to survive just one more wave.
Key Features:
Deep mech customization across multiple systems
Permanent global perks for evolving long-term strategy
Randomized perks for unique builds each run
Endless wave-based survival with escalating challenge
Boss encounters and mini-missions that break the flow
Meaningful progression through cash and core rewards
Genres
Reviews
this game has a lot of potential.it is fun to play and has a big mount replay value. but it has lots of bugs though.developer,please fix it.
Media

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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, Japanese, Portuguese - Brazil, Portuguese - Portugal*languages with full audio support
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
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| $173 | 8 | 88% | $0.99 | |
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| $1.1K | 17 | 65% | $3.99 | |
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| $5.4K | 292 | 46% | $0.79 |
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| $1.3K | 80 | 40% | $0.99 | |
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| $1.3K | 98 | 65% | $0.99 | |
| $1.3K | 75 | 67% | $0.79 |