Merge Stars vs Idle.py
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Merge Stars
Explore a vast universe by synthesizing new planets. This casual game offers an addictive experience with evolving cosmic rules to discover. Embark on a journey from the moon to distant worlds.
- Planet synthesis
- Universe exploration
- Casual gameplay
- Evolving cosmic rules
- Starry universe theme
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It's a light-hearted casual game and an addictive synthesis game. In the vast universe, constantly synthesize new planets and explore the mysteries of the universe. From the original moon, continuous fusion, Mars, Mercury, Venus, Earth... Different operating rules will take you to imagine the ultra-frontier future cosmic survival laws.
Idle.py
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Idle.py — a Python tutorial disguised as an idle game. Learn Python and modern AI engineering by playing. Tap to generate FLOPs (floating-point operations), then spend them on Compute Units that keep earning while you're away. Every Compute Unit you unlock — from your first variable to an AGI Lab — ships with a hand-written lesson, code samples, a quick-check quiz, and a 50-question practice bank. Real coding lessons. Real curriculum. No filler. THE COMPUTE UNIT LADDER • Variable, Function, Class, Module — Python's atoms. • Tensor, Neuron, Layer — what every model is built from. • Attention Head, Transformer Block — the 2017 idea that ate AI. • Foundation Model, Agent — pretraining, fine-tuning, tool-using LLMs. • GPU Cluster — distributed training: DDP, tensor parallelism, pipeline parallelism, NCCL. • AGI Lab — the recursive endgame. PYTHON PROGRAMMING BASICS (always free, always on) Lists & Tuples · Dicts & Sets · Strings & f-strings · Control Flow · Comprehensions · Iterators & Generators · Decorators · Exception Handling. PRACTICE BANKS Every lesson has 50 questions. Correct +1 knowledge, wrong −1 — drift below a bucket and your bonus drops. Option order reshuffles every draw, so you learn the answer, not the position. THREE REWARD AXES • Mastery (+1% per level) — earned from quizzes, capped at three per Compute Unit. • Knowledge (flat FLOPs/sec bonus) — earned from practice banks. • Insight (compounding multiplier) — earned from retraining the run. AI LANDMARKS 27 lifetime-FLOP milestones from "Hello, World" through GPT-4 and beyond. Each grants a permanent tap multiplier. The history of artificial intelligence is your scoreboard. TRANSCENDENCE (hardcore loop) Stack ten GPU Clusters and you can transcend: wipe the run for a permanent global multiplier and one Transcendence Unit (TU). Spend TU to unlock Singularity and ASI — the loop above the loop. NO ADS. NO SUBSCRIPTIONS. Optional one-time purchases only: • Founder Pack — permanent ×2 multiplier on FLOPs and tap. • Mentor Pack — advanced curriculum (LoRA, RLHF, Mixture of Experts, Evals). • Time skips and insight packs as small consumables. WHO IT'S FOR • Beginners who want a more rewarding Python tutorial than another video course. • Engineers picking up the modern AI engineering stack from the ground up. • Anyone who wants their idle game to teach them something real. Idle.py respects your time. Progress saves automatically. Offline FLOPs are credited on launch. No popup ads. No timers built to wear you down. Just the curriculum, the loop, and the math.
Screenshots
Verdict
The clearest difference is ads: Idle.py at none against Merge Stars's shown. Idle.py also leads on update cadence (weekly vs every 7 months). On price, in-app purchases, device support and iOS requirement 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. Merge Stars sells 6 one-off in-app purchases and Idle.py sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Merge Stars ships an update every 7 months, Idle.py weekly. Both last shipped on October 25, 2026.
| Parameter | Merge Stars | Idle.py |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (19 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 7 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 112 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | 冰 冯 | Byte Insights Limited |
In-app purchases
Merge Stars
- 10 Rubies$0.99
- 30 Rubies$1.99
- Remove Ads for Merge Stars$2.99
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- 80 Rubies$3.99
- 150 Rubies$5.99
- 300 Rubies$9.99
Idle.py
- Mentor PackFree
- +5 Insight$0.99
- Skip 4 Hours$0.99
Show 5 moreShow fewer
- Skip 24 Hours$1.99
- +15 Insight$2.99
- Founder Pack$3.99
- Skip 7 Days$3.99
- Sandbox Mode$19.99
Questions
Is Merge Stars free?
Is Idle.py free?
Do Merge Stars or Idle.py have ads?
Which is updated more often, Merge Stars or Idle.py?
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