Comparison

Behind the Wall! vs Backpack Alpaca

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

Head to head
About

Behind the Wall!

Defend your base from waves of attacking enemies by building defenses and training troops. Strengthen your base and ensure your army is always ready to overpower incoming threats before the wall is breached.

Highlights
  • Base defense
  • Enemy attacks
  • Base building
  • Troop training
  • Army management
Features
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Defend your base from attacking enemies from the other side of the wall, build your base stronger and train more troops, make sure your army overpowers the enemies at any given time the wall is not breached !

About

Backpack Alpaca

Features
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"Turns out, organizing your backpack really CAN save the world!" Llama Legion: Backpack Frontier – The Revolutionary Strategy TD fusing Roguelike + Inventory Management! When gentle llamas turn into elite warriors, your BACKPACK becomes the ultimate weapon to turn the tide! Game World In a magical farm world invaded by the Turkey Troop, once-docile llamas awaken as guardians! As the "Llama Commander," recruit unique llamas across procedurally generated maps. Face random events and strategic choices to build your one-of-a-kind defense and fight for your homeland! Llama Legion System • Collect 20+ llamas with distinct traits & skills Inventory Space Puzzle (Core Mechanic) • Tetris-style item placement for tactical advantages Dynamic Tower Defense Combat • Strategic deployment & real-time battles Audio-Visual Experience Art Style: Vibrant cartoon rendering + exaggerated physics Immersive Sound: Comical bugle calls of charging turkeys → High-tech item fusion SFX → Epic boss battle soundtracks Achievements: Unlock 50+ badges like "Space Magician" (Perfect Placement x10) and "Turkey Terminator" (Flawless Victory)!

Screenshots

Behind the Wall!4 screens
Backpack Alpaca4 screens

Verdict

The call

The clearest difference is in-app purchases: Behind the Wall! at none against Backpack Alpaca's 10. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Backpack Alpaca sells 10 one-off in-app purchases. Behind the Wall! asks for nothing beyond the download.

Scorecard1 real difference · 8 level
Behind the Wall! versus Backpack Alpaca: the parameters behind the verdict, then further details
ParameterBehind the Wall!Backpack Alpaca
PriceFreeFree
Rating1.5 (2 ratings) — better—
Number of ratings2 — better—
Update frequency—Every 3 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size126 MB146 MB
Age rating4+4+
DeveloperBooBoo GamesGuangzhou Duoyi Trading Co., Ltd

In-app purchases

None

Behind the Wall!

No in-app purchases

10 purchases

Backpack Alpaca

One-time10
  • Movie Tickets × 5$0.29
  • Founder's Bounty$0.99
  • Advertising Voucher Package$0.99
Show 7 more
  • Limited-Time Legendary Package$0.99
  • Wish Package$0.99
  • Movie Tickets × 10$0.99
  • Movie Tickets × 25$1.99
  • Skin Package$4.79
  • Golden Monthly Card$4.79
  • Premium Monthly Card$9.79

Questions

Is Behind the Wall! free?
Behind the Wall! is free to download, with no in-app purchases.
Is Backpack Alpaca free?
Backpack Alpaca is free to download, with in-app purchases available.
Do Behind the Wall! or Backpack Alpaca have ads?
Both Behind the Wall! and Backpack Alpaca show ads.

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