Door 5 · Mission 1 · Free Trial
Play the free Synthesis & Systems interactive simulation. Learn combining thinking tools to solve complex systems through hands-on gameplay. Free Mission 1 access — no account required.
Play Mission 1 Free →Door 5 combines every prior tool into one capstone — kids plan, build, and debug a full delivery system together.
Phira is owned by Jstars Holdings Inc.. A Jstars AI Project