TRUSSFALL vs Model Engine Builder

TRUSSFALL is bridge engineering, no shortcuts. Build and stress-test real bridge designs across 99 engineering trials. Place beams, add cables, and triangulate trusses — then send a car, truck or mega-rig across to see if your structure holds. Four materials unlock as you advance: - Wood — cheap, low strength, good for short spans - Steel — your workhorse: strong, stiff, balanced - Cable — tension-only; build suspensions and cable-stays - Reinforced concrete — heaviest, strongest, end-game Build your truss. Run the live load. Watch a vehicle roll across. If your design holds, you earn stars. If your weakest joint snaps under tension, gravity wins. EVERY LEVEL PLAYABLE FROM DAY ONE All 99 trials are free to play. The Lifetime Unlock removes the hint paywall (3 free hints per game), grants unlimited hints, and reveals all engineering-accurate bridge templates. Optional hint packs available too. WHAT'S INSIDE - 99 engineering trials with progressive difficulty - 10 distinct biomes with unique terrain features - 4 materials with realistic structural properties - Warren, K-truss, Pratt, suspension, cable-stay, arch templates - Live load simulation with stress-tested physics - 3 free hints; Lifetime gives unlimited - Family Sharing supported (Lifetime only) - Progress stays on your device — no tracking, no ads, no accounts ENGINEERED FOR THE PATIENT Truss math is computed live. Joints carry real loads. Members have real strength limits. Cables can only pull, never push. These are the same principles a civil engineer uses — and the level designs reward thinking like one. If you've played Bridge Constructor or Poly Bridge and wanted something with more engineering depth, this is for you. PRIVACY-RESPECTING BY DESIGN No third-party SDKs, no ads, no tracking, no accounts. Your progress lives on your device. Anonymous usage statistics (no ID, no location) help us tune the trials, and you can switch them off anytime in Settings. Built by a single developer who couldn't find the engineering puzzle game he wanted to play.

Build, run and collect engines in your own pixel-art workshop. Fit parts, tighten bolts, adjust the setup and time the ignition in four scored stages. Keep each finished engine on your shelf, complete Control and Response inspections, or try an untimed Free Run with throttle, load and start/stop controls. 15 ENGINES Four engines are ready to play. The other eleven can each be permanently unlocked on this device by completing an optional rewarded ad when available. The new designs are an inline three-cylinder, a flat-six and a supercharged V8. A one-time, non-consumable Remove Ads purchase unlocks all 15 engines and removes ads. It is not a subscription. BUILD AGAIN WITH A GOAL Follow your next workshop goal, collect inspection stamps and improve your weakest build stage. Assembly, setup and ignition demands now increase across four-, six-, eight- and twelve-cylinder engines. Compete on the existing online leaderboards through Game Center. Each engine has its own board. Existing board IDs and records are preserved; the three new engines have separate boards. Only completed four-stage build scores from 0 to 1000 are submitted, and higher records are kept. Failed score uploads remain queued for retry. Same-rules comparisons are an on-device coaching aid, not a replacement for online rankings. Core gameplay works offline without a separate account. Online rankings require internet and platform sign-in; ads and purchases require internet. Progress is stored on the device. Engine behavior and readings are game approximations, not engineering measurements.