Comparison

Crystal Guard vs Surf Evolution

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Crystal Guard

Defend a fragile crystal from waves of monsters in this unique Roguelite tower defense game. Strategically build mazes with blocks and develop powerful turrets to resist attacks. Adapt your tactics to collect crystals and secure victory.

Highlights
  • Roguelite gameplay
  • Block puzzle maze creation
  • Strategic tower defense
  • Turret development
  • Unique art style
  • Casual puzzle elements
Features
Read full description

In this unique Roguelite tower defense game, you play as the guardian of the Amethyst, responsible for protecting the fragile crystal from being destroyed by monsters. During the adventure, choose your favorite combination from unique turrets to cultivate, and use blocks of different shapes to create a maze to resist waves of attacks. Keep building, strengthening, and adjusting strategies until you successfully collect crystals and return to the kingdom. - Game Features - Roguelite gameplay Classic block puzzle game Strategic Tower Defense Turret development Unique art style Casual and puzzle elements [Instructions for automatic subscription service] 1.Subscription service: a) Remove All Ads For 30 Days (1 month) 2. Subscription price: a) Remove All Ads For 30 Days: the continuous monthly subscription product is US$4.99/month 3. Payment: After the user confirms the purchase and makes the payment, it will be credited to the iTunes account 4. Automatic renewal: Apple's iTunes account will be deducted within 24 hours before expiration. After the deduction is successful, the subscription period will be extended by one subscription period. 5. Turn off the service: You can go to "Settings" on your Apple phone --> Enter "iTunes Store and App Store" --> Click "Apple ID", select "View Apple ID", enter the "Account Settings" page, and click "Subscribe" ", manages automatic subscription services. If you need to cancel, just close it 24 hours before the end of each billing cycle. No fees will be deducted within 24 hours before expiration. 6. Service Agreement:  https://docs.google.com/document/d/1HykzvxBclFK7aQm6PJmzIou8KlxNzPXfVznTygZWRlg/edit?usp=sharing 7. Privacy Agreement:  https://docs.google.com/document/d/1BqE04-K6hoRCTml9yvIhl-SfUgRZY2dm-JDP7rgbuG4/edit?usp=sharing

About

Surf Evolution

Features
Read full description

Launch yourself forward, surf across stunning environments, and see how far you can go using skill, timing, and smart upgrades. Start your ride with a powerful slingshot launch, then glide smoothly across grasslands, deserts, snowfields, and more. Collect coins, use boosters, and upgrade your hoverboard to increase speed, airtime, and distance. Every run is a chance to beat your best score! Game Features: Smooth Hoverboard Surfing – Fast, fun, and easy-to-learn controls Boost & Fly – Use boosters to gain extra speed and airtime Multiple Maps – Surf through different environments like grass, sand, and snow Upgrades & Progression – Improve your board, slingshot, and income Distance-Based Gameplay – Go farther, faster, every run Colorful 3D Graphics – Clean visuals with satisfying speed effects Whether you’re chasing high scores or just enjoying the ride, this hoverboard surfing game delivers nonstop action and progression. Perfect for quick sessions or long runs! Tap to play, boost your speed, and surf your way to victory

Screenshots

Crystal Guard4 screens
Surf Evolution4 screens

Verdict

The call

The clearest difference is in-app purchases: Surf Evolution at none against Crystal Guard's 10. Crystal Guard's advantage is update cadence (every 2 days vs every 6 days) and iOS requirement (11.0 vs 13.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Crystal Guard sells 10 in-app purchases, starting at $4.99 per month. Surf Evolution asks for nothing beyond the download.

UpkeepUpdate frequency

Crystal Guard ships an update every 2 days, Surf Evolution every 6 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Crystal Guard versus Surf Evolution: the parameters behind the verdict, then further details
ParameterCrystal GuardSurf Evolution
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 6 days
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size283 MB162 MB
Age rating17+4+
Developer艳 王Krishna Ghate

In-app purchases

10 purchases

Crystal Guard

Subscriptions1
  • Remove All Ads For 30 Days$4.991 Month
One-time9
  • Newcomer pack$0.99
  • 10 advertising coupons$1.99
  • 30 advertising coupons$3.99
Show 6 more
  • Turret pack$3.99
  • Turret upgrade pack$5.99
  • Golden battle pass$6.99
  • 3000 Diamonds$7.99
  • 70 advertising coupons$7.99
  • Remove advertisements$19.99
None

Surf Evolution

No in-app purchases

Questions

Is Crystal Guard free?
Crystal Guard is free to download, with in-app purchases available.
Is Surf Evolution free?
Surf Evolution is free to download, with no in-app purchases.
Do Crystal Guard or Surf Evolution have ads?
Both Crystal Guard and Surf Evolution show ads.
Which is updated more often, Crystal Guard or Surf Evolution?
Crystal Guard ships an update every 2 days, and Surf Evolution every 6 days. Most recently, Crystal Guard was updated on October 21, 2026 and Surf Evolution on October 24, 2026.

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