Drobot vs Project Clean Earth
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Drobot
Engage in a 360-degree space shooter where you fire backwards to defeat mysterious creatures. Upgrade your character between waves to become stronger and clear all levels to restore peace. Features include a unique shooting mechanic and a variety of unlockable color palettes.
- Backwards-firing 360-degree shooting
- Upgrade system for character strength
- Ten-second waves with numerous enemies
- Dash ability with energy charge
- Unlockable color palettes
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Beep! Beep! Beep! It's a state of emergency! An outbreak of mysterious creatures is going on in outer space! -Game Descriptions Drobot is a backwards-firing 360-degree shooting game. One wave lasts ten seconds. The wave is cleared either when all enemies are killed or you escaped from all enemies. After clearing a wave, you can make drobot stronger with upgrade items. Clear all the waves and restore peace to space! -Controls Move and shoot with the joystick. Press the button to dash. You cannot use dash until your energy is charged. -Features Backwards-shooting Drobot gets progressively stronger through upgrades Exciting gameplay with huge amounts of enemies Unlock a wide variety of color palettes
Project Clean Earth
Embark on a survival adventure in a retro pixel world. Cleanse a radiation-contaminated Earth of mutant creepers using "Bernard," mankind's last weapon. Enhance your abilities with a variety of weapons, drones, and artifacts to complete the Earth Clean Project.
- Retro pixel graphic apocalypse world
- Sci-fi story and survival action
- Strengthen character with weapons, drones, artifacts
- Strategic weapon and drone combinations
- Random artifacts and events for replayability
- Discover mutant monster attack patterns
- New stages and modes as you grow stronger
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Rougelite + Hack'n Slash! An exciting apocalypse world view hidden in a retro pixel graphic. Sci-fi story and exciting survival action. Earth contaminated with radiation. to clean up the Earth that's left only the mutant creeper The last weapon of mankind, "Bernard," has come. Strengthen Bernard with dozens of weapons, drones, artifact items and various events! Complete the Earth Clean Project! - Strategically combine various weapons and drones, including short distance, long distance, and wide area. - Loglight Ryu's random artifacts and events are added to play new every time. - Find out the attack patterns of various and distinctive mutant monsters and target them - New stages and modes that increase as I become stronger Enjoy the new Rougelite Hack'n Slash now!
Screenshots
Verdict
The clearest difference is review sentiment: Drobot at 100% against Project Clean Earth's 47%. Drobot also leads on in-app purchases (none vs 16) and ads (none vs shown). Project Clean Earth's advantage is rating (4.7 vs 4.3) and ratings volume (1.9K vs 3). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Project Clean Earth sells 14 one-off in-app purchases. Drobot asks for nothing beyond the download.
Project Clean Earth holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Project Clean Earth has 1.9K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 100% of Drobot's written reviews are positive against 47% of Project Clean Earth's, so the app with the better star average is not the one people write more warmly about.
Drobot ships an update every 3 months, Project Clean Earth every 3 weeks. The most recent releases landed on June 11, 2026 and September 24, 2026 respectively.
| Parameter | Drobot | Project Clean Earth |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) | 4.7 (1.9K ratings) — better |
| Positive reviews | 100.0% of reviews — better | 47.2% of reviews |
| Number of ratings | 3 | 1.9K — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 44 MB | 401 MB |
| Age rating | 9+ | 12+ |
| Developer | Masayoshi Teshima | 1N1 |
Customer experience
Drobot
Project Clean Earth
Bugs and requests
Drobot
Not enough reviews yet to summarise bugs or requests.
Project Clean Earth
Reported bugs
3 issues- Purchased items not being delivered
- Crashes and freezes on certain devices
- Incorrect pricing and charges for in-app purchases
Requested features
4 requests- Multiplayer co-op mode
- More character customization options
- Improved balance and difficulty scaling
- Ability to quickly use stamina on beaten levels
In-app purchases
Drobot
No in-app purchases
Project Clean Earth
- Welcome Package$2.99
- Monthly Premium$3.99
- Intermediate Pack$4.99
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- Guerrilla Special Price$4.99
- Ad-Free Package$5.99
- Advanced Pack$6.99
- Gun Package$6.99
- Turret Package$6.99
- Buff Package$6.99
- Growth Fund Pack$8.99
- Growth Fund Pack 2$8.99
- Minerals Pack$10.99
- Mineral Pack2$12.99
- VIP Package3 variants$12.99
Questions
Is Drobot free?
Is Project Clean Earth free?
Which has better reviews, Drobot or Project Clean Earth?
Do Drobot or Project Clean Earth have ads?
Which is updated more often, Drobot or Project Clean Earth?
Other comparisons
