ilu vs Space Merge X
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
ilu
This logic puzzle game challenges you to illuminate dark areas by strategically placing lights. As you terraform barren planets and spread light, watch them transform with vibrant, animated life. Discover clever solutions and enjoy a relaxing, dynamic experience.
- Infinite relaxing logic puzzles
- Illuminate dark areas with light
- Terraform barren planets
- Discover clever solutions
- Dynamic music
- Animated hint system
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ilu is a puzzle game. In every puzzle, all that is dark must light up. You place a light by tapping a dark area. You will discover clever ways to place the lights as you play the game. STORY: ilu is light. You are a keeper of light. In the vast void of space, countless lost worlds drift in the dark. Planets that have lost their star mothers and are too far and cold for the rays of starlight to warm their dark and frozen features. It is your mission to terraform these barren planets. As you spread light through the worlds of ilu, watch the ground light up while colorful and beautifully animated plants sprout as the entire world gently teems with life. FEATURES: • Infinite relaxing logic puzzles solved with light • Simple rules that create compelling solutions • Dynamic music that responds to your play • An animated & intelligent hint system that teaches & guides your way The puzzles of ilu can be solved with pure logic alone. We wanted to share the wonderful "aha!" moments of discovering the solutions with you. ilu is supported with ads, but you have the option to permanently remove the ads from the game with an in-app purchase.
Space Merge X
Merge identical planets by placing them on a circle to complete levels and discover new celestial bodies. Utilize boosters to strategically delete or merge planets, accelerating your journey through the cosmos. Enjoy a relaxing puzzle experience as you expand your planetary collection.
- Planet merging gameplay
- Level completion for discovery
- Booster items
- Planet deletion option
- Intuitive controls
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Place three identical planets on the circle near each other, complete levels to discover new planets. Boosters will help you to merge planets like a pro: delete a planet you don't need, merge any two planets to discover new planets faster. Enjoy the game.
Screenshots
Verdict
The clearest difference is rating: ilu at 4.7 against Space Merge X's 3.8. ilu also leads on ratings volume (2.1K vs 8) and update cadence (every 3 weeks vs every 3 months). On price, ads, in-app purchases and monetization model 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. ilu sells 9 one-off in-app purchases and Space Merge X sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ilu holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: ilu has 2.1K ratings behind it against 8, so its average is the more settled of the two.
ilu ships an update every 3 weeks, Space Merge X every 3 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.
| Parameter | ilu | Space Merge X |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.1K ratings) — better | 3.8 (8 ratings) |
| Positive reviews | 69.2% of reviews | — |
| Number of ratings | 2.1K — better | 8 |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 535 MB | 97 MB |
| Age rating | 4+ | +4 |
| Developer | Brainium Studios LLC | Egor Kunovsky |
Customer experience
ilu
Space Merge X
Bugs and requests
ilu
Reported bugs
3 issues- App crashes on launch for some users
- Placement of markers and lights not always registering correctly
- Recent update changed visuals in a way that made the game less clear
Requested features
4 requests- Zoom or pan functionality for larger puzzles
- Separate marker and light placement modes
- Progress tracking and ability to replay past puzzles
- More variety in background music tracks
Space Merge X
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ilu
- 100 Ad-Free Puzzles$0.99
- Terra Suit$0.99
- Turbo Suit$1.99
Show 6 moreShow fewer
- The Botanic$1.99
- Pod$2.99
- Spectral Suit$3.99
- Chromus$4.99
- Ayianna$6.99
- Unlock Ad-Free$7.99
Space Merge X
- Unlimited Boosters$1.99









