When there is a bonus level or bonus stages in a game, it makes more attractive to the player. This bonus level helps the player to take a little break from the action and distract him or herself with a new experience. These miniature levels offer the player reprieve from typical gameplay, usually in the form of a limited time with the promise of extra points, lives if the player succeeds. All the bonuses that are collected make the huge difference when the player is nearly a high score or trying hard to win the game. These are the bonus stages that makes the difference in gameplay that challenges the player to chase after that sweet, perfect completion and built their expectations of what would come when they collect the hidden elements
Examples of games which have bonus levels:
Super Mario Bros 3. In this game, the players get to play a bonus level, in which the players have to collect coins, power-ups and also escape from enemy turtles and dragons. If any of the players hits the then the player loses and
the level ends. This kind of bonus level makes gameplay interesting and enjoyable.
Example: The Mark of the Ninja
Mark of the Ninja is a platform side scroller that feels like an open world game. There are numerous paths the player can take to accomplish the same objective. There are however side quests and hidden puzzles with in the game that are worth finding. Besides the bonus they give, they often require an interesting use of the in game mechanics to be beat. They are more intense puzzles that take thought to beat contrasting beating the soldiers which can be brute forced if necessary.
Ex: Swarm
Swarm is a space exploration and survival game destroying aliens and collecting weapons. Swarm's core mechanic involves controlling the spaceship and shooting while drifting in space. Swarm involves bonus levels filled with Bonus weapons, defence shields and health upgraders. The AI is smart enough to understand if the player is struggling through the level, the next level will immediately be a bonus level for the player to balance fun and difficulty.
