puzzle games". The graphics were praised by many, with IGN, GameSpot and Famitsu liking the bright colors and cartoony art-style. GameSpy said that its Powerpuff Girls-style was a fresh idea for the genre. IGN said that the game's presentation was decent, with an interesting style and sprite effects. Nintendojo and Famitsu also liked the sprites for their smooth, clean animation. The inclusion of touch-screen controls via the DS Stylus was seen by IGN and GameSpy as a generally unneeded mechanic, with both saying that the D-Pad allowed for much quicker, precise actions. While some liked the game's music for being upbeat and catchy, others found it forgettable and bland. The game's sound effects and voice acting were also the subject of criticism, with IGN and Nintendo World Report in particular calling them annoying and poorly-implemented. IGN also liked the game's usage of the console's dual-screens, although wrote "but you can't help but feel most of the capabilities of Nintendo's new handheld have been wasted". Most publications found the gameplay to be enjoyable and fun to play. Nintendo World Report greatly praised Drill Spirits gameplay for being well-designed and unique compared to other puzzle games, with IGN and Nintendojo saying it would satisfy fans of the series. Yahoo! Games appreciated its balanced difficulty level and appealing nature to newer players. The lack of a single-card multiplayer feature was the subject of criticism by several publications; Nintendo World Report and GameSpy criticized Namco for removing the single-card feature from the Japanese and European versions, while IGN reacted with confusion since Namco's other multiplayer game for the system, Ridge Racer DS, had a single-card option for multiplayer. Several also disliked the lack of depth and additional gamemodes. Nintendojo criticized the multiplayer itself for being unenjoyable at times, finding it inferior to the multiplayer options found in games such as Puyo Pop Fever and Bomberman DS. Famitsu felt the game was inferior to previous games in the series, such as Mr. Driller Drill Land and Mr. Driller Ace, with its lack of extra features. The included modes critics reacted to positively; Famitsu labeled the Dristone Driller mode as the highlight of the package, while IGN liked the Pressure Driller mode for its uniqueness and for building on the series' core gameplay. Famitsu and Yahoo! Games praised the usage of unlockable extras for adding replay value. Retrospectively, Retronauts said the game was more of a