MergePlanet vs Space Relay
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Planet merging gameplay
- Universe synthesis progression
- Casual and relaxing experience
- Score-based challenges
- Visual appreciation of celestial bodies
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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!
Space Relay
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MergePlanet | Space Relay |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | — |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 68 MB |
| Age rating | 9+ | 12+ |
| Developer | 华任 王 | Anna Pustovaia |
In-app purchases
MergePlanet
No in-app purchases
Space Relay
No in-app purchases









