But certain puzzles about Mozart's life have persisted through two centuries of research.

In the game, it primarily serves as a means of redirecting the Sun's rays to solve certain puzzles.

There are trophies if a pirate plays on a certain puzzle for a certain amount time, or experience.

Flux can sometimes be used like an item to overcome certain puzzles in the game.

On Entertainment mode, hints were available and you could bypass certain puzzles in the game.

However, you received bonus points if you solved certain puzzles within a set amount of time.

Now that he knew who he was, the answers to certain puzzles became terribly clear.

At the time, computer scientists were turning to Newtonian physics to try to resolve certain fundamental puzzles in the field.

Optionally, a player can quit a puzzle at no cost and try another, though certain puzzles are mandatory to progress.

Players can instantly switch between these groups in order to accomplish tasks quicker or solve certain puzzles.