Solve puzzles with real-time generated levels. Adjust difficulty with four options. Play against peers in local challenges. Use undo/redo, hints, and error checking. Track cell input with path notes. Save and reload puzzles. Auto-save on exit.
Design and simulate analog and digital circuits with SPICE technology. Analyze circuit behavior and test designs. Explore 97 example circuits including BJT amplifiers, MOS amplifiers, oscillators, filters, and complex projects like UART and RISC CPU.
Blast blocks to fill rows or columns. Summon stronger units to defend your kingdom. Defend your base by defeating enemies in a puzzle and tower defense gameplay.