Academics
HollowTots
Peekaboo grows up. Find the Moonstone Flitter the moth hid under a den, then hide it yourself while she looks. Decide which valley animal is bigger, and laugh when tiny Puck tickles Ursa the bear home. Then play Hush, the whole hide-and-find game in miniature. Made for a grown-up and a child together; no reading, no score. Ages 3-5.
▶ Play it nowBuilt for sittings of about 10 minutes on the screen. That is our design budget, not a measurement.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, asks, and patiently scaffolds learning.
Mentored by Flitter
#6A4C93 Characters who teach
Meet the cast
In the Hollowmere Valley, Flitter the moth hides the Moonstone and lets you hide it too. Ursa the bear is the biggest animal, and tiny Puck the mouse is the one who can tickle her home if he gets there first. Flitter shows rather than asks: she hides, she seeks, she gets it wrong, and she laughs.
Flitter
hides the Moonstone, seeks it, sometimes guesses wrong, and laughs
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Ursa
A big bear - the biggest animal in the valley; bigger tags smaller
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Puck
A tiny mouse - the smallest, but he tickles Ursa home when he gets there first
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Browse all chapters → · What's distributed-narrative methodology? →
What's inside
Learning goal
Peekaboo grows up. Find the Moonstone Flitter the moth hid under a den, then hide it yourself while she looks. Decide which valley animal is bigger, and laugh when tiny Puck tickles Ursa the bear home. Then play Hush, the whole hide-and-find game in miniature. Made for a grown-up and a child together; no reading, no score. Ages 3-5.
Mentored by Flitter — no data leaves the device.
How HollowTots handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ Free — no ads, no in-app purchases
- ✅ No personal information collected from children — in line with COPPA (updated by the 2026 FTC amendments)
- ✅ No chat with strangers — play-together rooms use a short code and preset emotes, never typed messages