Comparison

Spacetime Sprint vs Idle Human Evolution Merge RPG

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

Head to head
About

Spacetime Sprint

Race through space, dodging obstacles at light speed while learning STEM principles. Work with historical scientists, enhance your gameplay with collected bits, and build your IQ to unlock new features. Recruit friends to assist in your cosmic journey.

Highlights
  • Learn STEM principles
  • Work with famous scientists
  • Explore Hubble images
  • Collect bits to enhance gameplay
  • Build IQ and unlock features
  • Recruit friends as assistants
  • Activate Power-Up Particles
Features
Read full description

Launch a scientist across the cosmos at near light speed — and try not to slow down. SpaceTime Sprint is a one-thumb arcade runner built on real physics. Steer left and right to weave through asteroids, black holes, and the strangest phenomena in the universe. Every hit drags you below light speed; stay clean to keep your distance climbing. DODGE THE UNIVERSE Solar flares, pulsars, quasars, gravitational lensing, quantum tunnelling, dark matter, supernovae and more — each is its own hand-crafted set piece with its own trick to read and beat. Discover new theories as you run and they unlock in your codex. A LAB THAT'S YOURS Between runs, explore your laboratory. Spend the Bits you collect on power-up particles, new scientists to fly, galaxy backdrops, and playful lab gadgets — tap the disco ball, the Tesla coil, Schrödinger's cat box, and more. POWER-UP PARTICLES Stock particles like the Neutrino, Electron, Higgs Boson, Dark Matter and Antimatter, then grab them mid-run for a burst of speed, double Bits, a shield, a Bit magnet, or a clean sweep of the field. LEARN AS YOU PLAY Every theory comes with a plain-English explainer and a literal how-to-play. Guided walk-throughs teach you the lab and the controls. It's an arcade game with a physics degree. CHASE THE LEADERBOARD Bank your furthest Light-second distance and your biggest single-run Bit haul, and climb the boards. FEATURES • One-thumb arcade controls — tap or tilt • Over 50 physics-themed set pieces to discover • A living lab to explore and upgrade • Collectible power-up particles • Unlockable scientists and galaxy backdrops • Practice mode for any theory you've found • Procedural music and sound, no ads, no nonsense No account, no internet required. Just you, a scientist, and the speed of light.

About

Idle Human Evolution Merge RPG

Guide a hero from primitive times to a cosmic empire in this idle RPG. Evolve humans through various ages, unlock new abilities, and engage in strategic battles with evolving bombs. Enjoy offline progress and customize your hero's journey.

Highlights
  • Evolve humans through the ages
  • Idle evolution progress
  • Merge life simulator mechanics
  • Unlock evolving bombs
  • Time travel through eras
  • Customize and upgrade hero
  • Offline progression
Features
Read full description

Do you love RPG idle Human Evolution Games where you evolve humans through the ages of empire? In this human evolution merge life simulator, you’ll guide a hero from the primitive era civilization through an hyper evolution adventure ages journey to a cosmic empire. Enjoy human evolution clicker mechanics, idle evolution progress, and even evolving bombs! EVOLVE HUMANS Start your civilization journey in the prehistoric period and primitive era. Survive ancient dangers and unlock new abilities. Enjoy time travel through the ages of empire, through futuristic worlds and beyond, shaping your hero into the ultimate warrior. RPG IDLE HUMAN EVOLUTION GAMEPLAY Auto Progression: Evolve humans, fight battles with evolving bombs, and gather resources—even when you're offline! Exciting Idle Human Battles: Face powerful enemies, use human civilization skills with strategy, and level up effortlessly. Simple Controls: Play this human evolution merge life simulator with ease, enjoy evolution clicker mechanics, and watch your hero’s transformation. CUSTOMIZE & UPGRADE YOUR HERO Evolution Paths: Choose different evolutionary upgrades and specializations. Powerful Skills: Unlock and enhance abilities that help you dominate battles. Unique Gear & Artifacts: Equip weapons and relics from each era to boost strength. EXPLORE A VAST UNIVERSE Time Travel Through the Ages: From the Stone Age and primitive era to futuristic space civilization. Discover Hidden Secrets and evolve humans: Unlock special hyper evolution stages and rare artifacts. History-Driven Progression: Each stage in this human evolution merge life simulator unfolds a new chapter in your hero’s legend. WHY PLAY EVOLUTION: IDLE RPG? Addictive idle mechanics that keep the game running 24/7. Beautifully designed eras with stunning visuals. A mix of casual and strategic gameplay—play your way! Embark on the ultimate evolution journey and build your hero’s legacy! This RPG idle human evolution merge life simulator lets you evolve humans through the ages of empire. Enjoy evolution clicker mechanics, unlock evolving bombs, and master Idle evolution civilization across the adventure ages. Start your Human Evolution Adventure today! Privacy Policy: https://multicastgames.com/policy Terms of Use: https://multicastgames.com/termsofuse

Screenshots

Spacetime Sprint4 screens
Idle Human Evolution Merge RPG4 screens

Verdict

The call

The clearest difference is review sentiment: Spacetime Sprint at 100% against Idle Human Evolution Merge RPG's 54%. Spacetime Sprint also leads on in-app purchases (none vs 15) and ads (none vs shown). Idle Human Evolution Merge RPG's advantage is ratings volume (785 vs 3) and iOS requirement (13.0 vs 16.0). On price 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. Idle Human Evolution Merge RPG sells 14 one-off in-app purchases. Spacetime Sprint asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spacetime Sprint holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Idle Human Evolution Merge RPG has 785 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Spacetime Sprint's written reviews are positive against 54% of Idle Human Evolution Merge RPG's.

UpkeepUpdate frequency

Spacetime Sprint ships an update every 3 days, Idle Human Evolution Merge RPG every 2 months. The most recent releases landed on October 5, 2026 and October 30, 2026 respectively.

Scorecard8 real differences · 2 level
Spacetime Sprint versus Idle Human Evolution Merge RPG: the parameters behind the verdict, then further details
ParameterSpacetime SprintIdle Human Evolution Merge RPG
PriceFreeFree
Rating5.0 (3 ratings) — better4.8 (785 ratings)
Positive reviews100.0% of reviews — better54.3% of reviews
Number of ratings3785 — better
Update frequencyEvery 3 days — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size75 MB439 MB
Age rating4+12+
DeveloperJoshua FairMULTICAST GAMES LIMITED

Customer experience

Spacetime Sprint

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Idle Human Evolution Merge RPG

All ratings725 ratings
Positive94.5%
Neutral1.7%
Negative3.9%
Written reviews346 reviews
Positive54.3%
Neutral15.0%
Negative30.6%

Bugs and requests

Spacetime Sprint

Not enough reviews yet to summarise bugs or requests.

Idle Human Evolution Merge RPG

Reported bugs

3 issues
  • Health bug causing health to drop unexpectedly
  • Issues with attack and health percentage upgrades
  • Unable to find religion for portal

Requested features

3 requests
  • Option to make icons smaller
  • More content and updates
  • Fix for health bug and other issues

In-app purchases

None

Spacetime Sprint

No in-app purchases

14 purchases

Idle Human Evolution Merge RPG

One-time14
  • Gems Pack 01$1.99
  • Age Pack 1$1.99
  • Age Pack 2$4.99
Show 11 more
  • Gems Pack 02$4.99
  • Gems Pack 03$9.99
  • Age Pack 3$9.99
  • Age Great Pack 2$9.99
  • Age Pack 4$14.99
  • Age Pack 9$19.99
  • Age Great Pack 3$19.99
  • Gems Pack 04$19.99
  • Age Great Pack 4$29.99
  • No Ads$34.99
  • Gems Pack 06$99.99

Questions

Is Spacetime Sprint free?
Spacetime Sprint is free to download, with no in-app purchases.
Is Idle Human Evolution Merge RPG free?
Idle Human Evolution Merge RPG is free to download, with in-app purchases available.
Which has better reviews, Spacetime Sprint or Idle Human Evolution Merge RPG?
Spacetime Sprint is rated higher. Spacetime Sprint averages 5.0 out of 5 from 3 ratings, while Idle Human Evolution Merge RPG averages 4.8 from 785 ratings.
Do Spacetime Sprint or Idle Human Evolution Merge RPG have ads?
Idle Human Evolution Merge RPG shows ads; Spacetime Sprint does not.
Which is updated more often, Spacetime Sprint or Idle Human Evolution Merge RPG?
Spacetime Sprint ships an update every 3 days, and Idle Human Evolution Merge RPG every 2 months. Most recently, Spacetime Sprint was updated on October 5, 2026 and Idle Human Evolution Merge RPG on October 30, 2026.

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