Doki-Doki Universe - Mega Deko Mail Pack (USA) (DLC) is a downloadable content (DLC) for the PlayStation 3 game, Doki-Doki Universe. This pack adds a new adventure featuring the robotic mailman, Deko, and his mail-delivering mission. Players will help Deko deliver mail to all corners of the universe while they explore new environments, meet new characters, and solve puzzles. The pack also includes a new mini-game, 'Deko's Delivery Dash', where players must deliver mail to various locations as quickly as possible.

The Mega Deko Mail Pack also includes a variety of new items, decorations, and costumes for Doki-Doki Universe. Players will be able to customize their avatar with new clothes and accessories, as well as decorate their home planet with new decorations. The pack also includes a variety of new music tracks and artwork.

The Mega Deko Mail Pack is available for download from the PlayStation Store. Players can purchase the pack for a one-time fee, or purchase the game and the pack together for a discounted price. The pack is also available for download from romsbase, a website offering a wide variety of ROMs and games for download. With the Mega Deko Mail Pack, players can add a fresh new adventure to their Doki-Doki Universe experience.