Split Decisions
Split decisions is a bit like a crossword puzzle without any clues. The solver has to fill out the cells with letters such that each slot in the grid is a valid word. But there is a twist: some pairs of letters are pre-filled in the grid with two different options, and the words have to make sense with either option. For example, if the options are __AR_ and __IT_, the answer could be SPARE, SPITE, so S, P and E could be valid words in the grid.
The puzzle embedded here has been created for Amuse Labs by Fred Piscop. Split Decisions is a registered trademark, see this site for more information.
Rows Garden
The Rows Garden is an interesting puzzle format by Patrick Berry. Like in an American crossword, all letters are part of two clues; however, the solver has to work out which clue refers to which cells. To create this game, you would first construct a normal crossword grid, and enable the Rows Garden special effect for that puzzle.
KenKen
KenKen is a mathematical logic puzzle that combines the grid-based challenge of Sudoku with basic arithmetic. Solvers must fill in the grid so that each row and column contains each digit exactly once. Groups of cells called cages are outlined with bold borders and marked with a target number and an arithmetic operation (+, −, ×, ÷). The numbers within each cage must combine using the given operation to produce the target number.
Amuse Labs supports the game provided by kenkenpuzzle.com.