STEM
TectonicForge
Pilot a drill into Earth's mantle, watch continents drift across 250 million years, trigger earthquakes and volcanic eruptions, and become a geological hazard engineer protecting cities from the dynamic planet beneath your feet.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, praises, and patiently scaffolds learning. On-device AI personalizes the mentor's responses to your kid's progress — never connecting to a server, never collecting data.
#29B6F6 TectonicForge is a plate tectonics, earthquake, and volcano science lab where you drill into the Earth's interior, watch continents drift across 250 million years, trigger earthquakes and volcanic eruptions, and engineer geological hazard solutions to protect simulated cities. Your AI mentor Geo con
Distributed-narrative cast
Meet the cast
TectonicForge's 5-character cast embodies the plate-tectonic + crustal-motion + magma-behavior primitives — convergent/subduction (Sink), divergent/mid-ocean-ridge (Spread), transform/fault (Slide), volcanism + magma chemistry (Vent), seismology + earthquake preparedness (Tremor). Geo (mentor preserved; registry-confirmed pre-existing) frames each primitive. SITE entry mentor field added in Wave 31 (was missing). TRAUMA-INFORMED CONTENT FLAG TRUE per .claude/rules/trauma-informed-content.md (earthquake + volcano content; kids affected by recent disasters may carry trauma). Earth-as-storyteller-across-time framing: Sink/Spread/Slide patient + Vent evidence-of-internal-state + Tremor preparedness-without-fear. Cast NEVER ranks disasters; NEVER 'biggest ever' gamification. Real-world events (Tōhoku/Christchurch/Pompeii/Krakatoa/Mt-St-Helens/Lisbon/Concepción/Nepal/Ridgecrest) credited BY NAME with respect. Off-ramps required for kit 7+11+12. External \$300-\$500 disaster-preparedness-pedagogy reviewer RECOMMENDED for kit 7 (preparedness) + kit 11 (hazard engineering) + kit 12 (real-world case studies).
Sink
Convergent/subduction boundary — the heavier plate finds its way down; it takes a long time; that's okay
Spread
Divergent boundary + new crust — when something pulls apart, something new is forming in the middle
Slide
Transform boundary + stored energy — two plates sliding past; they catch, they hold, then they let go
Vent
Volcanism + magma chemistry — eruptions tell us what was happening below
Tremor
Seismology + earthquake preparedness — earthquakes are the Earth telling its story; we can read the lines; we can be ready
What's inside
Earth Interior Explorer
Tap to drill down through the Earth's layers. Discover the crust, upper mantle, lower mantle, outer core, and inner core. Each layer has different properties —
Plate Motion Lab
Drag tectonic plates and watch what happens when they collide, separate, or slide past each other. Convergent boundaries create mountains and volcanoes. Diverge
Earthquake Simulator
Trigger earthquakes and watch seismic waves propagate outward from the epicenter. See P-waves (fast, compression) arrive before S-waves (slower, shearing) at di
Volcano Science Lab
Adjust magma composition (silica and gas content) to control eruption style. Low silica creates gentle Hawaiian-style lava flows. High silica and high gas conte
Mentored by Geo — on-device AI, no data leaves the device.
How TectonicForge handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ No ads, no in-app purchases — you pay once
- ✅ COPPA compliant under the 2026 FTC amendments
- ✅ Parental controls + session limits + content filters built in
TectonicForge runs on ForgeKit — the open-source Swift Package Manager framework that powers every Spark & Anvil app. ForgeKit ensures consistent accessibility, COPPA compliance, and design language across the portfolio, so your kid's progress and preferences feel coherent across every app they touch.
Coming to the App Store
TectonicForge is in active development. Email us to hear when it ships — no marketing, no spam, just a one-shot launch announcement.
Email me at launch