Stackward is an 8×8 placement puzzle with rows, columns, and 4×4 quarters,
200 designed and solver-proved campaign levels, a server-replayed Daily,
one-board continuous Endless, and a separate Gauntlet of proved rounds.
It includes blockers, objective variety, free retries, free Endless rerolls,
drag/tap parity, themes, high contrast, left-hand layout, and three motion
levels. It has no ads, lives, energy, consumable currency, paid retry, or
ranked purchase advantage.
Fit bright blocks, clear lines and quarters, and solve fair real levels.