- Unlockable characters: In the game, players can unlock various creatures, which have different abilities and characteristics. For example, the Red Panda has the power to glide, while the Armadillo can roll to break through obstacles.

- Power-ups and upgrades: The game has power-ups, such as shields, invincibility, and speed boosts. Additionally, players can upgrade their skills, such as jump height, speed, and slide distance, to help them clear levels more efficiently.

- Leaderboards: Players can compare their scores and progress with their friends and other players worldwide through the game's leaderboard feature.

Walkthrough:

Level 1: The first level of Leap Day is relatively simple, aimed at introducing the player to the game's controls and mechanics. The level has a few spikes and pits, but the player can easily jump over them. The goal is to collect all the coins and reach the end of the level within the time limit.

Level 2: As the player progresses to level 2, they will encounter enemy creatures, such as a frog, which jumps up and down. The player must time their jumps carefully to avoid the frog and collect all the coins.

Level 3: The third level introduces the player to a new obstacle, traps. The traps are activated as the player steps on them and shoot out spikes. The player must time their movements to avoid the traps and collect the coins.

Level 4: In level 4, the player encounters more traps, but with a new feature of arrows that point towards them. Additionally, the player must also dodge an enemy caterpillar, which moves back and forth. The player must use their skills to evade both the traps and caterpillar to complete the level.

Level 5: In level 5, the player encounters a new enemy, a beetle, which crawls towards them. The player must time their jump to avoid the beetle while collecting coins. Additionally, the level has a time limit, making it challenging to complete within the given time.

Level 6: In level 6, the player must navigate a maze-like structure with multiple paths. The player must choose the correct path that leads them to the end of the level, collecting all the coins. The level also has traps and enemies that players must avoid.

Level 7: In level 7, the player must make use of their slide ability to break through blocks and reach the end of the level. The level has a few difficult sections where the player must time their slide correctly, making it one of the more challenging levels.

Level 8: In level 8, the player encounters a new enemy, a bat, which flies towards the player. The bat requires quick reflexes to avoid, and the player must also dodge more traps and collect all the coins.

Level 9: In level 9, the player must use their jumping ability to navigate a level with moving platforms. The moving platforms require precise timing to jump on and off, making it a challenging but enjoyable level.

Level 10: In level 10, the player must face the boss, a giant spider. The spider has multiple legs that shoot out webs, making it difficult to avoid. The player must use their skills to dodge the spider's attacks and attack back to defeat the boss.

Conclusion:

Leap Day is a highly addictive game that is easy to pick up and play, with new levels added every day. The game provides a good challenge, with various obstacles and enemies that require strategic movements and quick reflexes to avoid. The game's features, such as unlockable characters, power-ups, and leaderboards, add to the game's replay value. Overall, Leap Day is an excellent platformer game that is sure to keep players entertained and engaged for hours on end.