Nature Strikes Back TD vs keep
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Nature Strikes Back TD
Defend the Heart of Nature by merging powerful guardian spirits to fight off an invading pollution army. This game combines merge, tower defense, and idle mechanics for a unique fantasy experience.
- Merge and unlock 70+ guardian spirits
- Defend against waves of pollution enemies
- Battle boss Muckmares
- Recycle spirits for rewards
- Idle defense and rewards
- Fantasy elements and cute characters
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The Natural World is under attack by the MuckMonger Pollution Army of evil Mucklings and MuckMares! This dark army is now assaulting the entrance to Deep Earth where the Heart of Nature is kept. They must not be allowed to enter or all will be lost! But Nature is not completely defenseless! - Natural Guardian Spirits have emerged from the Deep Earth to defend Nature against the onslaught of the Mucklings and MuckMares - but we need your help! Merge the Natural Spirits to create stronger Guardians and strategically arrange them on the Last Patch in front of the entrance to Deep Earth to fight off the never-ending waves of Mucklings and defeat the MuckMare bosses. “Nature Strikes Back” combines the best aspects from merge games, tower defense games, and idle games into a unique gaming experience with fantasy elements and cute characters. *Nature Strikes Back is a Merge Game! Merge the Natural Spirits to unlock the cute characters that are ever stronger Guardian Spirits! *Nature Strikes Back is a Tower Defense Game! Nature needs your help to defend the entrance to the Deep Earth and the Heart of Nature! *Nature Strikes Back is also an Idle Game! Even while you are away, you can continue to defend Nature and earn rewards! Features: Merge and unlock 70+ cute Natural Guardian Spirits! Defeat waves and waves of the Pollution Army of Mucklings and the boss Muckmares! Recycle your extra Natural Guardian Spirits for rewards! Continue to defend the entrance to Deep Earth even while you’re idle! Nature Strikes Back is free to play, though some in-game items can also be purchased for real money. You can turn off the payment feature by disabling in-app purchases in your device’s settings. Privacy Policy: https://www.digitalwill.co.jp/privacy-policy Terms of Service: https://www.digitalwill.co.jp/terms-of-service
keep
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In the game, players control the character to jump over obstacles through the touch screen. The operation of the game is very sensitive to the touch, while controlling multiple characters to ensure they do not touch obstacles. The game adopts a record breaking mode with unrelated cards, and players need to be fully focused in order to get high scores. Come on! Keep running! Stay alive!
Screenshots
Verdict
The clearest difference is in-app purchases: keep at none against Nature Strikes Back TD's 15. keep also leads on ads (none vs shown) and update cadence (every 2 days vs monthly). On price, device support and iOS requirement 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. Nature Strikes Back TD sells 15 in-app purchases, starting at $3.99 per 7 days. keep asks for nothing beyond the download.
Nature Strikes Back TD ships an update monthly, keep every 2 days. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | Nature Strikes Back TD | keep |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (799 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 799 — better | — |
| Update frequency | Monthly | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 69 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | GMonsters Inc. | 思航 赵 |
Bugs and requests
Nature Strikes Back TD
Reported bugs
3 issues- Purchased features not working
- Progression reset
- Reduced currency earning
Requested features
2 requests- Dark mode option
- Better ad monetization balance
keep
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nature Strikes Back TD
- VIP Subscription$3.997 Days
- VIP Subscription3 Days trial$7.997 Days
- 30 gems$0.99
- Double Offline Earnings$0.99
- Coin Bundle$0.99
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- Remove banner/interstitial ads$0.99
- Coin Bundle$1.99
- Remove banner/interstitial ads$2.99
- 180 gems$4.99
- Unlock Fort$5.99
- Unlock Fort$9.99
- 420 gems$9.99
- 960 gems$19.99
- 2550 gems$49.99
- 5700 gems$99.99
keep
No in-app purchases
Questions
Is Nature Strikes Back TD free?
Is keep free?
Do Nature Strikes Back TD or keep have ads?
Which is updated more often, Nature Strikes Back TD or keep?
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