Free Krillion vs ChimpTest
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Free Krillion compared with ChimpTest
| Detail | 
Free Krillion | 
ChimpTest |
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| What it does | The free endless dive trivia game where the rarest answer wins
| A free memory game inspired by Ayumu the chimpanzee at Kyoto University
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Seven prompts per dive with 25 seconds each
- Six rarity scoring tiers from Plankton to One in a Krillion
- Ocean depth visualization showing score as metres descended
- Five real ocean zones from Sunlit Shallows to Hadal Trench
- Unlimited mode for endless practice dives
- Daily dive with same prompts for everyone
- Multiplayer with pass-and-play or online rooms
- Practice mode with no time pressure
- Question bank with 172 hand-built questions
- No account required; play as guest
| - Progressive levels that add numbered squares
- Flash window shrinks as difficulty increases
- Three-strike game over system
- Local browser storage of scores
- Challenge links with shared level difficulty
- Customizable flash speed via URL parameter
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| What makes it different | - Rewards rare answers rather than just knowledge or speed
- Never reveals answer lists to preserve mystery
- Completely free with no premium tier or paywall
- Score visualized as real ocean descent through five zones
- Open-ended prompts with broad answer spaces
| - Based on genuine peer-reviewed research from Kyoto University's 2007 Ayumu experiment
- No account, no download, no personal data collection
- Includes detailed educational articles about the original experiment and memory science
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 6 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 6 |
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| Citation Flow (Majestic) | 13 | 20 |
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| Referring domains (Majestic) | 2 | 3 |
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4 details filled in for both companies.
More alternatives to Free Krillion More alternatives to ChimpTest