Numbered puzzle campaigns. Climb one level at a time.
Slide the blocks to free the target through the opening. Work up through numbered puzzles, one at a time.
Shade one L, I, T or S tetromino in each region so all shaded cells connect, no 2×2 is filled, and matching shapes never touch.
Place one crown in each row, column and colored region. No two crowns may touch, even diagonally.
Place two stars in each row, column and colored region. No two stars may touch, even diagonally.
Divide the grid into rectangles. Each rectangle holds one number equal to its area.
Fill the grid with two symbols so no three sit in a line, each row and column is balanced, and every = and × mark is obeyed.
Place bulbs so every square is lit. No two bulbs may see each other along a row or column, and each numbered wall touches exactly that many. Work up through numbered puzzles, one at a time.
Every row and column holds each building height once. The numbers at the edge say how many buildings you can see from there. A tall building hides shorter ones behind it. Numbered puzzles, one at a time.
A crossword whose answers are sums. Fill the white squares with 1–9 so every run adds up to the clue before it, never repeating a digit inside a run. Work up through numbered puzzles, one at a time.
Shade numbers until none repeats in any row or column. Shaded cells may not touch, and all unshaded cells must stay connected. Numbered puzzles, one at a time.
Flood the grid so every number sits on an island of exactly that many dry squares. The water has to be all one piece and can never form a 2×2 block. Work up through numbered puzzles, one at a time.
Draw one closed loop along the edges between the dots. Each number says how many of its four sides the loop uses. The loop never branches or crosses itself.
Fill the grid from the clues on each row and column. Every board can be solved by logic, with no guessing. Numbered puzzles, one at a time.
Build a formal proof one line at a time. Pick a rule and tap the earlier lines it uses. The new line writes itself. Open a box to suppose something, then close it to make an if-then. Reach the goal to win.
Link the numbered islands with straight bridges. At most two between a pair, none crossing. Each island gets exactly its number, and all islands connect.
Pick a colour, then tap a region to fill it. Make the board one colour in as few moves as you can. Numbered puzzles, one at a time.