Comparison

Space Glider 2D vs Alien Defense

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

Head to head
About

Space Glider 2D

Features
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Greetings! It is time to embark on an amazing space journey. Try yourself as a pilot of a space glider. Crack your agility and try to avoid obstacles as long as possible, because from every second the complexity will only increase. Hold out the most time, share the results with friends through the Game Center. - Pleasant and responsive one-finger controlls; - The design of the game is made in a minimalistic style, so that nothing distracts you from the gameplay; - Suitable for players of any age; - Short gaming sessions will perfectly help pass the time on the road; - No advertising and In-App purchases; - Integration with Game Center will allow you to record the result in the high score table and share it with friends; --------------------- Important consumer information: This application does not require a permanent Internet connection. There is no in-game advertising. The developer reserves the option to disable or change the behavior of game components according to their preferences. The game can be connected to the collection of statistics and user data for users using third-party services, while respecting the laws of the GDPR and CCPA, about which users will receive a notification.

About

Alien Defense

Features
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Alien swarms are closing in. Build your base, raise an army and hold the line in real-time sci-fi strategy. BUILD AND DEFEND - Construct and upgrade buildings to train troops and protect your command center. - Mine crystals, train your forces and push back wave after wave of alien invaders across a growing campaign. PICK YOUR BUILD EVERY WAVE - Pick new buildings and army upgrades as the battle unfolds. - Chase powerful upgrades to shape a different strategy every run. COMMAND A SCI-FI ARMY - Unlock infantry, armored vehicles, mechs and air units, each with its own role on the battlefield. - Turn the tide with battlefield skills: repair your base or call in a nuclear strike. GROW STRONGER - Upgrade every building and level up your units between battles. - Research a tech tree to boost damage, health, mining and critical hits. - Open supply chests for blueprints and unit shards. CLIMB THE ARENA RANKS - Take your army into the Arena, battle rival commanders and earn new ranks. PLAY ANYWHERE - Play in your language: switch anytime in Settings. - Play offline, no Wi-Fi needed.

Screenshots

Space Glider 2D3 screens
Alien Defense4 screens

Verdict

The call

The clearest difference is in-app purchases: Space Glider 2D at none against Alien Defense's 3. Space Glider 2D also leads on ads (none vs shown). Alien Defense's advantage is update cadence (fortnightly vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Alien Defense sells 3 one-off in-app purchases. Space Glider 2D asks for nothing beyond the download.

UpkeepUpdate frequency

Space Glider 2D ships an update every 5 months, Alien Defense fortnightly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard3 real differences ยท 3 level
Space Glider 2D versus Alien Defense: the parameters behind the verdict, then further details
ParameterSpace Glider 2DAlien Defense
PriceFreeFree
Update frequencyEvery 5 monthsFortnightly โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details โ€” not scored
Size96 MB284 MB
Age rating4+9+
DeveloperSerhii ChechuiPLAYGENIX EDTECH INC.

In-app purchases

None

Space Glider 2D

No in-app purchases

3 purchases

Alien Defense

One-time3
  • 500 Gas$0.99
  • 4,000 Gas$4.99
  • 20,000 Gas$19.99

Questions

Is Space Glider 2D free?
Space Glider 2D is free to download, with no in-app purchases.
Is Alien Defense free?
Alien Defense is free to download, with in-app purchases available.
Do Space Glider 2D or Alien Defense have ads?
Alien Defense shows ads; Space Glider 2D does not.
Which is updated more often, Space Glider 2D or Alien Defense?
Space Glider 2D ships an update every 5 months, and Alien Defense fortnightly. Most recently, Space Glider 2D was updated on November 3, 2026 and Alien Defense on November 7, 2026.

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