Free Exploration · No Score, No Game
Change a parameter, see the real answer instantly — the same solvers that power our calculators, running live as you explore.
These are not games. There is nothing to win. They exist for one purpose: to build direct, hands-on intuition for how structures actually behave — the kind of intuition equations alone rarely give you.
New here? A 2-minute guide to how every game and simulation on this site works →
Mode shapes, natural frequency, resonance — watch a structure's own dynamic personality emerge as you change mass and stiffness.
Push, pull, and reposition loads on a real frame and watch the deflected shape and internal forces update live.
Zoning limits, floor-area ratios, circulation, daylight — design under real constraints.
Feed a structure a real earthquake record and watch how period, damping, and ductility change the outcome.
Sharpen the engineer's most underrated skill: knowing roughly the right answer, fast.
How a blast load enters a protective envelope — waves, layers and what reaches the protected side.
What's under the building matters as much as the building itself — soil pressure, foundations, and stability.
How structural elements respond to fire — heating rates, critical temperatures, time to failure.
How rooms sound — reverberation time from surfaces and finishes.
Rubble-mound armor stability under wave attack.
Total-station reduction and traverse closure.
Sun-tracking shading — the geometry behind motorized louvres.
The Critical Path Method — which activities control the finish date.
Fast, shallow flow suddenly slowing down.
Taming resonance with a tuned secondary mass.
Banked curves — how fast is safe, how tight can you turn.
The limit state that ends most concrete structures decades before any structural failure.
When saturated sand loses its effective stress and stops behaving like ground.
Beyond force-based checks — how far the structure actually moves, how it twists, and how to disconnect it from the ground.
Section-level nonlinearity and the regions where ordinary beam theory stops applying.
Prestressing, combined actions, and the ductile fuses and foundation compliance that modern seismic design depends on.
Civil-protection planning for accidental explosions — setting safe distances, not analyzing attacks.
