Clara
Qubic
Three-dimensional tic-tac-toe (4×4×4) — the classic popularised by Parker Brothers — rebuilt as a high-craft template. It is **net-new** and distinct from the flat games in the set (`ultimate-ttt`, `gomoku`, `order-chaos`): the board is a **cube**, and the depth comes from the lines that run *between* the layers.
Quarto
The award-winning abstract with a wicked twist, you versus a tactical CPU. There are 16 pieces, each unique across four traits — **size** (tall/short), **colour** (dark/light), **shape** (square/round) and **fill** (solid/hollow). On your turn you place the piece your opponent **hands** you, then choose which remaining piece they must place. Complete a line of four pieces that share **any one trait** (all tall, all hollow, all dark…) to call **Quarto** and win. The catch: you arm your rival every turn.
Pyramid 13
The classic Pyramid solitaire. Remove pairs of uncovered cards that add up to 13 (A=1 … Q=12); a King is 13 and clears on its own. A face-up reserve row at the bottom is always available to pair with. Clear the whole pyramid to win.