8! Challenge vs Chess with Robots
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
8! Challenge
A brain-teasing puzzle game where you fill a 4x4 board with dice numbered 1-6. Rows or columns summing to 8 merge and disappear, requiring strategic play to avoid filling the board and losing.
- 4x4 board puzzle
- Dice merging mechanic
- Strategic gameplay
- Brain training
- Simple rules, challenging play
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Fill a 4x4 board with dice. Whenever a row or column adds up to exactly 8, it clears. That's the whole rule. Staying alive is the hard part. Each turn you get a die (sometimes a double) and choose where to drop it. Every placement changes what the rows and columns add up to, so one careless move can lock the board up fast. Think a few steps ahead, set up chains, and keep cells open for whatever comes next. HOW TO PLAY • Drag the die from the stand onto any empty cell • A row or column that totals 8 clears and scores • Double dice take two cells at once, so place them with care • The game ends when the board is full and nothing adds up POWER-UPS Running out of room? Spend the coins you earn from each game on three tools: • Hammer: knock a single die off the board • Bomb: clear a 3x3 area in one go • Trash: throw away a die you don't want WHY PEOPLE KEEP PLAYING • Quick rounds that fit into a coffee break, or long runs when you're chasing a best score • Simple arithmetic that still makes you think, a nice little workout for your brain • One-handed play, no timer, no pressure • Works offline, so it's good for commutes and flights • A short tutorial gets you going in under a minute 8! Challenge is free to play and supported by ads.
Chess with Robots
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Chess-playing robots with personality. AI with a twist. The robots in Chess with Robots play with different strengths and styles. They have differing philosophies, skills and levels of contempt for you. Discover the fun and learning of playing against different robot personalities. The custom chess engine in Chess with Robots not only gives you robot opponents of different strengths but also different playing styles. Each robot has a unique view on how to play chess. With dynamic personalities based on archetypes of real-world human players with emotions, Chess with Robots is designed to be more fun and more realistic. Have fun and improve your chess game, playing against robots with different ideas about how to play chess. Review your moves and get tips in review mode after games to improve your skills. Track your progress in game history and share games with friends.
Screenshots
Verdict
The clearest difference is in-app purchases: 8! Challenge at none against Chess with Robots's 3. Chess with Robots's advantage is update cadence (every 4 days vs every 97 months) and iOS requirement (9.0 vs 13.0). On price, ads 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. Chess with Robots sells 3 one-off in-app purchases. 8! Challenge asks for nothing beyond the download.
8! Challenge ships an update every 97 months, Chess with Robots every 4 days. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.
| Parameter | 8! Challenge | Chess with Robots |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 97 months | Every 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 65 MB | 91 MB |
| Age rating | 4+ | 4+ |
| Developer | Thang Vu | Adrian McPhee |
In-app purchases
8! Challenge
No in-app purchases
Chess with Robots
- 0LU$0.99
- L1V$0.99
- 0scar$0.99
Questions
Is 8! Challenge free?
Is Chess with Robots free?
Do 8! Challenge or Chess with Robots have ads?
Which is updated more often, 8! Challenge or Chess with Robots?
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