There isn't a single, concrete theme for the mod, but several key elements contribute to its overall atmosphere:
* Nostalgia: The mod heavily draws inspiration from classic 8-bit and 16-bit video games, particularly those from the NES and SNES eras. It pays homage to those games by mimicking their pixel art style, gameplay mechanics, and even references to specific titles.
* Humor: The mod is known for its quirky humor, often expressed through its visuals, item descriptions, and even the in-game dialogue. It leans towards a lighthearted and silly tone, providing a playful experience.
* Challenge: Despite its whimsical nature, the mod offers a significant challenge. It features difficult enemies, intricate level design, and a wide range of powerful items, requiring players to adapt and strategize to survive.
* Exploration: With its many hidden rooms, secret items, and various challenges, the mod encourages exploration and discovery. Players are rewarded for seeking out secrets and mastering the game's intricacies.
Overall, "Isaac the Alchemist: Fun They Had" presents a unique blend of classic gaming nostalgia, humor, and challenge, creating a fun and engaging experience for players familiar with both "The Binding of Isaac" and classic video games.