Mario & Luigi RPG 4: Dream Adventure (マリオ＆ルイージRPG4 ドリームアドベンチャー) is a role-playing game developed by AlphaDream and published by Nintendo for the Nintendo 3DS. The game is the fourth installment in the Mario & Luigi RPG series and the first to be released on the 3DS. The game follows Mario and Luigi as they travel to the Dream World to save their friends from a mysterious force. The game features turn-based combat and a variety of puzzles and mini-games. Players can also customize their characters with a variety of costumes and accessories. Mario & Luigi RPG 4: Dream Adventure features a unique art style, colorful visuals, and a variety of musical tracks. The game also includes a local multiplayer mode, allowing up to four players to team up and play together. Mario & Luigi RPG 4: Dream Adventure is an entertaining and enjoyable RPG experience that will keep players engaged for hours.