Comparison

MergePlanet vs Space Relay

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

Head to head
About

MergePlanet

Combine identical planets to create larger celestial bodies, starting from atoms and progressing to synthesizing the entire universe. Experience the thrill of creation and aim for high scores in this casual synthetic game.

Highlights
  • Planet merging gameplay
  • Universe synthesis progression
  • Casual and relaxing experience
  • Score-based challenges
  • Visual appreciation of celestial bodies
Features
Read full description

Welcome to MergePlanet — the planet-merging puzzle you literally can't put down! The rules are absurdly simple: drop a planet into the cosmic box. When two matching planets bump into each other, *poof*—they fuse into a bigger one. Keep merging, evolving from a tiny meteor all the way to a dazzling giant star. Sounds easy? Just wait. This thing is harder to quit than your midnight snacks. Features One-touch controls — foolproof enough for your grandma Merge and evolve a whole chain of planets, collecting your own galaxy Climb the global leaderboard and show the universe who's the merge king Relaxing, no energy meters, no paywalls — totally free How big can your planet grow? A gentle supernova, or a black hole that devours everything? Don't keep the cosmos waiting — the creator's throne has been empty long enough. Your universe awaits!

About

Space Relay

Features
Read full description

Orbit Relay is a fast, one-touch space runner about momentum, gravity, and how far you can push before the void wins. Pilot a rocket through an endless chain of planets. Tap the left or right side of the screen to bank and fire a short thrust burst - then let gravity do the rest. Ride orbital arcs, slingshot past worlds, and chain clever paths to push deeper into space. The farther you travel from your home planet, the higher your score climbs. Easy to pick up. Hard to master. Every burst counts. After each thrust, your engine needs a cooldown - so timing matters as much as courage. Thread tight gaps, skim planet gravity wells, and keep your speed without drifting too far into the cold dark. Risk vs. reward • Crash into a planet - game over. • Drift too far into empty space - game over. • Play it safe, or gamble on one more relay toward a personal best. Compete globally Qualify for the TOP-10 leaderboard, save your nickname, and chase a higher rank run after run. Built for quick sessions • One-finger controls • Procedural planet routes - no two runs feel quite the same • Atmospheric starfield, retro-inspired visuals, and optional CRT-style effects • Available in 12 languages How far can you go before gravity - or the void - pulls you back? Download Orbit Relay and start your next run.

Screenshots

MergePlanet4 screens
Space Relay4 screens

Verdict

The call

The clearest difference is ads: MergePlanet at none against Space Relay's shown. Space Relay's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 7 level
MergePlanet versus Space Relay: the parameters behind the verdict, then further details
ParameterMergePlanetSpace Relay
PriceFreeFree
Rating3.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 3 months—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size37 MB68 MB
Age rating9+12+
Developer华任 王Anna Pustovaia

In-app purchases

None

MergePlanet

No in-app purchases

None

Space Relay

No in-app purchases

Questions

Is MergePlanet free?
MergePlanet is free to download, with no in-app purchases.
Is Space Relay free?
Space Relay is free to download, with no in-app purchases.
Do MergePlanet or Space Relay have ads?
Space Relay shows ads; MergePlanet does not.

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