Game review
Tower Walker: MMO Grind Simulator
6 / 10
- Developer
- Raptor Claw Games, Millendream
- Publisher
- Raptor Claw Games, Millendream
- Released
- 8 February 2023
- Platforms
- Windows
- Genre
- Idle RPG, Incremental, Fantasy
- Monetisation
- One-time purchase plus five optional paid content DLC (new races, classes and a bonus zone). No advertisements, no premium currency, no subscription.
- Players
- Single-player only, despite the name
The short version
Tower Walker: MMO Grind Simulator is a single-player idle fantasy RPG from Raptor Claw Games and Millendream, released 8 February 2023. You build a hero, send them up an endless procedural tower, and manage what to fight and what to equip while combat itself runs automatically — a deliberately tongue-in-cheek take on MMO grind culture despite having no multiplayer at all. It sits at a lifetime Mostly Positive 77.9% across 271 reviews, with recent English sentiment holding roughly steady at 74%. The core loop earns real, sustained affection from players with thousands of hours logged, but this review's negative sample surfaces one specific, dated, still-unresolved complaint that outweighs ordinary genre grumbling: a monitor-detection bug that freezes the entire PC on launch, first reported in 2024 and still being reported by a 772-hour player in March 2026. The developer has now announced a spiritual successor, Mushi, and Tower Walker's own news feed reads increasingly like a wind-down.
Biggest strengths
- The hero-building loop — gear, racial traits, companions, floor selection — gives idle-RPG fans more to actually decide than a pure incremental clicker, and long-time players describe genuine, sustained satisfaction with the progression curve
- A distinct sense of humour and lore, deliberately branding a solo game "MMO Grind Simulator" and leaning into that joke throughout its update history and community writing
- One-time purchase with no advertisements, premium currency or subscription; the five DLC packs add optional races, classes and a zone rather than gating core progression
Biggest weaknesses
- A monitor-detection bug that freezes the entire computer on launch is this review's single clearest, most damaging finding — first reported in February 2024 and still being reported by a 772-hour player in March 2026, more than two years later
- There is no offline or background progression despite the idle framing; several reviewers specifically note the game must be left running and active to earn anything, which undercuts the genre's usual promise
- A 2026 reviewer reported losing 500-plus hours of characters and progress after switching computers, despite Steam Cloud being listed among the game's features — this review can't resolve the discrepancy, only report both facts
Who it's for: Idle-RPG fans who want genuine hero-building depth over pure number-go-up mechanics and are comfortable buying an indie game whose most persistent technical issue was never fully fixed; not for anyone who needs guaranteed offline progress or a spotless launch experience.
Our recommendation: A genuinely satisfying grind for the players it works for, but check the freeze bug against your own hardware before buying, and know the developer's attention has now moved to its successor.
6 / 10
Introduction
Tower Walker: MMO Grind Simulator is a single-player idle fantasy RPG built around a joke its own developers keep leaning into: it borrows the name and structure of an MMO grind while never being one. Released 8 February 2023 by Raptor Claw Games and Millendream, it drops you into a mysterious, ancient tower with one hero, has you choose which floor to fight on and what gear to equip, and then runs the actual combat automatically while you decide what to do next. Three years and more than 60 patches on, it sits at a lifetime Mostly Positive 77.9% across 271 reviews, recent English sentiment holding roughly steady around 74%. This review reads that entire English-language sample and finds a game with genuine idle-RPG substance, undercut for a meaningful stretch of its life by one specific, well-documented technical problem the developers never fully solved.
A hero worth building
What separates Tower Walker from a pure incremental clicker is how much of the build is actually yours to shape. Racial traits, gear slots, party companions and skill choices all feed into how your single hero performs against the tower's escalating floors, and reviewers with genuinely enormous time invested — one logging over 3,800 hours, another past 1,900 — describe a progression curve that keeps rewarding attention long after the opening hours. One long-time player calls the balance between what you actively control and what runs on autopilot "great," and several others frame the appeal in almost meditative terms: a game you can leave running while you work, checking in periodically to spend currency and adjust a build. Steam's achievement data backs up that there is real structure to dig into — 167 tracked achievements in total, with a distinct cluster of "brutal" difficulty superboss achievements that sit at a near-uniform 2.1–2.4%, describing a late-game wall only a small fraction of the playerbase ever reaches. The wider spread is a fairly typical idle-RPG curve: several early exploration and boss achievements clear 45–70% of the tracked population, a broad middle tier sits in single digits, and depth genuinely exists for players willing to commit the hours.
The bug that won't go away
Set against that, this review's clearest and most consistent negative finding is not about balance or content — it's a specific, dated, still-current technical fault. Multiple reviewers, spread across 2024, 2025 and into 2026, describe the game locking up their entire computer on launch, tied by community reports to a monitor-detection issue rather than anything as simple as a crash to desktop. One reviewer in November 2024 added a dated follow-up in January 2025 confirming the problem was "still impossible" to work around months later; another in May 2025 reported the same freeze after "nearly 6 months of promises and troubleshooting with no results." The most recent English negative in this review's sample, posted in March 2026 by a player who had logged 772 hours with the game, states plainly that "the game has been out for over 3 years and they still haven't been fixed, it's fair to say that the devs just don't care." That's a judgement from someone with substantial investment in the game rather than a drive-by complaint, and this review treats it accordingly — a real, persistent defect that a shopper should weigh before buying, not a launch-week problem that has since aged out.
No offline idling, despite the idle framing
A second, related pattern worth flagging for genre fans specifically: several reviewers note there is no meaningful offline or background progression here. One describes it plainly as "a combat focused version of Melvor" but points out "there is no offline time, and you can only play as one character at a time." Another calls the game "ridiculously grindy" and objects to needing to leave a PC powered on and running continuously just to make progress, rather than the genre-standard promise of gains accruing while the game — or the computer — is closed. That's a fair expectation to set for anyone shopping this as a typical idle RPG: it asks you to keep the window open and running, not to walk away from it.
One further, unresolved discrepancy is worth reporting rather than adjudicating: a 2026 reviewer describes losing more than 500 hours of characters and progress after switching computers, saying the game lacked Steam Cloud syncing at the time. Steam's own current store listing for Tower Walker does include Steam Cloud among its features. This review cannot determine whether cloud saving was added after that player's loss, was misconfigured on their system, or the account is otherwise mistaken — only that both facts are true as reported, and a reader relying on cloud saves should verify the feature is active before assuming their progress is protected.
Value, DLC and where the money goes
Tower Walker is a one-time purchase — NZ$12.39 at full price, currently NZ$6.19 at a 50% discount — with no advertisements, premium currency or subscription anywhere in its monetisation. Five optional DLC packs add new playable races, two new classes and one bonus zone with its own dungeon and pets; at full price the complete set runs to roughly NZ$36 on top of the base game, though all five are currently discounted alongside it. None of that content gates the core tower-climbing loop — the base game's tower, floors and core classes are all playable without spending beyond the initial purchase — so this reads as a conventional expansion model rather than a pressure campaign, and reviewers largely treat it that way.
A game whose developer has moved on
Raptor Claw Games' own news feed tells a fairly clear story about where things stand now. Patch notes were regular through mid-2025, but the studio's more recent posts promote a new game, Mushi, described explicitly as Tower Walker's "successor and a continuation of the TW formula," with a public demo already live and full launch pending. A May 2026 developer post titled "The legacy of Tower Walker" reflects on the game's seven-year development history since its 2019 prototype and explicitly frames what comes next as evolution rather than further support for the current game. None of that erases what's here — 60-plus patches were shipped, and the game that exists today is substantially deeper than its 2023 launch state — but a buyer today should understand they're picking up a game whose active development has effectively concluded in favour of its sequel.
Final Verdict
Tower Walker earns its Mostly Positive rating honestly: the hero-building loop has real depth, the tongue-in-cheek "MMO Grind Simulator" branding is more clever than it first sounds, and players who commit hundreds of hours describe genuine, sustained satisfaction rather than compulsion alone. What keeps this review from scoring it higher is a specific, dated, still-reported technical fault that locks up players' entire computers on launch — a problem that outlasted the developers' active support window without a confirmed fix — layered on top of a lack of offline progression that cuts against what idle-RPG fans typically expect walking in. Buy it for the loop, not the idle promise in its marketing, check that the launch bug doesn't affect your setup before committing, and treat it as a finished, no-longer-actively-developed game rather than one still climbing toward its own 1.0.
Readers who want that same sense of building a hero over time, but with progression that keeps moving even while the game itself is closed, may find Wanderer's own offline systems closer to what "idle" usually promises.
Pros and cons
Pros
- The hero-building loop — gear, racial traits, companions, floor selection — gives idle-RPG fans more to actually decide than a pure incremental clicker, and long-time players describe genuine, sustained satisfaction with the progression curve
- A distinct sense of humour and lore, deliberately branding a solo game "MMO Grind Simulator" and leaning into that joke throughout its update history and community writing
- One-time purchase with no advertisements, premium currency or subscription; the five DLC packs add optional races, classes and a zone rather than gating core progression
- Steam's achievement data shows real depth beyond the early game — 167 tracked achievements with a distinct "brutal" late-game dungeon tier most players never reach
Cons
- A monitor-detection bug that freezes the entire computer on launch is this review's single clearest, most damaging finding — first reported in February 2024 and still being reported by a 772-hour player in March 2026, more than two years later
- There is no offline or background progression despite the idle framing; several reviewers specifically note the game must be left running and active to earn anything, which undercuts the genre's usual promise
- A 2026 reviewer reported losing 500-plus hours of characters and progress after switching computers, despite Steam Cloud being listed among the game's features — this review can't resolve the discrepancy, only report both facts
- Development has visibly wound down; the studio's own news feed now promotes a successor game, Mushi, rather than further Tower Walker content
Screenshots
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Tower Walker: MMO Grind SimulatorImage: Raptor Claw Games via Steam -
Tower Walker: MMO Grind SimulatorImage: Raptor Claw Games via Steam -
Tower Walker: MMO Grind SimulatorImage: Raptor Claw Games via Steam -
How the review scores each part of the gameWanderer Editorial -
The essentials at a glanceWanderer Editorial -
The short versionWanderer Editorial