Can You Reach 8K sets the bar past the familiar 2048 tile: the target is 8192, which requires four more doublings and a board managed almost perfectly from the first move. Everything else is the classic sliding puzzle.
Reaching 2048 is a matter of good habits; reaching 8192 requires them without a single lapse, because one careless move that strands a big tile in the middle is usually fatal that far in.
Considerably harder than 2048 — it needs four more doublings, which means roughly sixteen times as many merges with no serious mistakes along the way.
The same principles apply but with no room for lapses: corner discipline, a descending snake along one edge, and never using the fourth direction.
Yes — swipe to slide. Nothing to install.