Balance lab: underfoot (careful bot)
2026-10-26 · rules version 39 · 200 seeds per arm · 287 s.
Each arm plays the same seeds as the baseline; its columns are the difference from the baseline, per run, with a 95% interval. ✱ marks a difference the interval says is real. Sorted by levels gained. The bots answer a gem by taking the first thing offered and never shop.
| Arm | Levels cleared | Won | Lives lost | Turns per level | Turns in danger | Stalled |
|---|---|---|---|---|---|---|
| baseline | 19.32 | 93% | 0.24 | 83.4 | 5.4% | 4% |
| underfoot (NES rule) | −0.56 ± 0.61 | −6 ± 5 ✱% | +0.12 ± 0.13 | +12.3 ± 2.9 ✱ | +5.0 ± 0.3 ✱ | 8% |
The baseline, level by level
| Level | Runs reaching it | Lives lost there | Turns there | Within par |
|---|---|---|---|---|
| 1 | 100% | 0.02 | 66 | 19% |
| 2 | 100% | 0.01 | 69 | 25% |
| 3 | 100% | 0.01 | 65 | 32% |
| 4 | 100% | 0.00 | 85 | 34% |
| 5 | 100% | 0.01 | 81 | 36% |
| 6 | 100% | 0.02 | 80 | 38% |
| 7 | 99% | 0.01 | 85 | 38% |
| 8 | 99% | 0.02 | 100 | 45% |
| 9 | 98% | 0.02 | 96 | 47% |
| 10 | 98% | 0.03 | 85 | 59% |
| 11 | 97% | 0.01 | 85 | 63% |
| 12 | 96% | 0.00 | 93 | 73% |
| 13 | 96% | 0.01 | 84 | 74% |
| 14 | 96% | 0.04 | 84 | 78% |
| 15 | 95% | 0.01 | 77 | 88% |
| 16 | 95% | 0.01 | 94 | 85% |
| 17 | 94% | 0.00 | 86 | 87% |
| 18 | 94% | 0.01 | 87 | 94% |
| 19 | 94% | 0.02 | 79 | 96% |
| 20 | 93% | 0.02 | 75 | 98% |
Lives lost in the baseline, by cause: walkedIntoEnemy 25, blast 14, trapped 1, caughtByEnemy 6, chain 2, spikes 1.