After a routine mission, exhausted Galaxy Patrol member Reynold returns to the artificial planet XENO, only to find that XENO is awfully unusual as soon as the spaceship lands on the planet. The bustling, crowded planet is now in darkness and silence, Reynold's little daughter went missing for long and her life remained uncertain. Reynold feels the clock's ticking, while the truth is bewildering...


All residents disappeared, yet there's weird, horrible creatures haunting instead. What made XENO out of all recognition, and where is your daughter?

Aim, shoot! Running away wouldn't be best solution, you have to face these vicious creatures alone, with limited supplies, and your only backup is your AI assistant. Learn to survive in the darkness and take control!

Solve all the puzzles and problems to proceed.

Even though you're desperate,the whole palnet is paralyzed, which makes it no longer your sweet home. Explore and search every inch of the areas and every corner.


Authentic lights, shadows and effects,along with immersive music, bring you the most unique journey to XENO.

The infection may diffuse at any minute, are you ready for it?


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What’s New

Version 1.0.4

* Minor fixes

Ratings and Reviews

4.4 out of 5
257 Ratings

257 Ratings

Nythauk ,

GREAT, thus far...

I’ve only played for a very few minutes, but the game is easy to set up, easy to play and satisfying enough to keep my attention for a while. I like the graphics, storyline is a little thin, but hey, it’s a shooter & requires just two things really, villains and a hero. I am the hero, so w/decent visuals it is a good way to wind down from a long day. Interface is smooth, intuitive in fact, and I had zero trouble with control over me character. A fine entry in the shooter, spy, hero, world of gameplay and one title I was glad to add to my iPad’s memory, (cloud saves work to keep memory freed up for graphical use). Anyone playing this genre will not be disappointed in the game with a strong belief they will greatly enjoy the time spent with it. Now...back to the game!

Developer Response ,

Thanks for sharing your experience, enjoy!

Bingo435 ,

Loved it hoping for more

Love the game. The gameplay was enjoyable. The horror aspect was really fun. The game itself wasn't to hard but Defenitly challenging. The puzzles took me a bit of time to figure out but I got them. I hope you decide to continue the story or release a second game. With more content. I will Definitely be purchasing future levels and expansions. Or a second game if it comes out. Thank you for such an enjoyable experience playing your game.

Developer Response ,

Thanks for playing Star Diffusion! We'd make announcements if there's new content, please keep an eye on our updates. Enjoy :D

[Glitch119] ,

Dead Space for mobile!

Honestly when I was finished with the first level I was thinking about if I actually wanted to pay or not so I just decided to since I really had nothing to loss because, you know I can always work, but, I ABSOLUTELY LOVE IT, I haven’t beaten it completely tho. But it’s sooooo much fun and the money was well spent! Hope to see more!

Developer Response ,

Thanks for playing Star Diffusion! Enjoy!


The Time Tunnel Limited
997.8 MB

Requires iOS 9.0 or later. Compatible with iPhone 5S, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPad Air, iPad Air Wi‑Fi + Cellular, iPad mini 2, iPad mini 2 Wi‑Fi + Cellular, iPad Air 2, iPad Air 2 Wi‑Fi + Cellular, iPad mini 3, iPad mini 3 Wi‑Fi + Cellular, iPad mini 4, iPad mini 4 Wi‑Fi + Cellular, iPad Pro (12.9‑inch), iPad Pro (12.9‑inch) Wi-Fi + Cellular, iPad Pro (9.7‑inch), iPad Pro (9.7‑inch) Wi‑Fi + Cellular, iPad (5th generation), iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation), iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch), iPad Pro (10.5‑inch) Wi‑Fi + Cellular, iPad (6th generation), iPad Wi‑Fi + Cellular (6th generation), iPad Pro (11‑inch), iPad Pro (11‑inch) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (3rd generation), iPad Pro (12.9‑inch) (3rd generation) Wi‑Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi‑Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi‑Fi + Cellular, iPad (7th generation), iPad (7th generation) Wi‑Fi + Cellular, iPod touch (6th generation), and iPod touch (7th generation).


English, Chinese, Simplified Chinese, Traditional Chinese

Age Rating
Infrequent/Mild Realistic Violence
Frequent/Intense Cartoon or Fantasy Violence
Frequent/Intense Horror/Fear Themes
In-App Purchases
  1. 3~9 Full Episode $2.99
  2. 4~9 Full Episode $2.99
  3. Purchase for the Episode 3 $0.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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