Science prompt
Name a type of rock — Best Krillion Answers
Facing “Name a type of rock” in a dive? Here is how to think rare: the best picks, the safe backups, and the crowd defaults to avoid. Every answer below is real and valid — rarity decides the tier.
Best rare pick: Gabbro — specific, valid, and uncommon enough for Deep Cut or better.
Avoid (Plankton): Granite, Obsidian — correct, but the crowd's first thought.
One in a Krillion — 100 pts
The rarest valid answers — maximum depth.
Gabbro · Rhyolite
Deep Cut — 85 pts
Extremely rare picks most players miss.
Diorite · Andesite
Rare — 60 pts
Genuinely uncommon — strong scoring.
Shale · Sandstone
Schooler — 30 pts
Known but not top-of-mind.
Slate · Limestone
Too Clever — 15 pts
A bit too obvious.
Marble · Basalt
Plankton — 10 pts
The crowd's default — avoid these.
Granite · Obsidian
How to play this prompt
Strategy notes specific to “Name a type of rock” — not generic advice.
Science prompts reward precision — the vague version of your answer is common, the exact term is rare.
Lead with Gabbro. It's the kind of answer that makes other players say 'I knew that!' after the reveal — which is exactly why they didn't type it. Diorite works the same way if you want a second bullet in the chamber.
Watch out for Granite. It's valid, but validity isn't the game — rarity is. Obsidian has the same problem: everyone knows it, so everyone types it, so it scores like everyone.
Shale and Limestone are the honest middle of this prompt — answers most players know but few type first. If your instinct answer feels too easy, reach for this layer instead of the obvious.
Think in clusters, not singles. Andesite, Sandstone, and Diorite sit in the same rarity band — knowing one should unlock the others when the clock is running.
Rated 4/5 difficulty — only 12 banked answers, so matching the bank is genuinely hard. Precision matters more than speed here.
Related prompts
More Science prompts to train on — same rarity thinking, new answers.