The clock starts the moment you tap.
All four games at one difficulty. Fresh puzzle every time; practice is never ranked.
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Four puzzles on one grid, back to back, once a day. The clock runs from the moment you tap Play until the last grid clears.
If a game notices you're stuck, a Hint button appears. Some hints only tell you what has already gone wrong — Connect will show you that your line is dead, Fill will point at the pieces in the way. Others hand you a move: Fill will place a piece for you early on, Flood names a colour, and Recall lights up the next cell in the sequence. No hint ever gives you the whole solution. Every hint is counted, shown on your result, and blocks the clean and speed badges for that run.
Your progress is saved. Come back whenever and you'll pick up exactly where you left off — the clock stops while you're away.
The board is hidden while you're paused, and this time doesn't count against your run.