Players manoeuvre blocks (called "Gumblocks"[1]) around a board also consisting of "blockers", which never move.

[1] A move is a single step in one of the cardinal directions, which is applied simultaneously to all Gumblocks that are not blocked.

Tournament mode has the player solve at least 15 of groups (of which there are eight of increasing difficulty, each set by a "leading Denki Blocks!

[25] Tiger Games's managing director James Bryan said that he loved Denki Blocks!

He said Tiger Games did "an impressive job" with the PlayStation Portable version, and that it felt like a Denki creation.

Craig Harris of IGN described the Game Boy Advance version of Denki Blocks!

as "a lot of fun and one hell of a mind twister" and praised graphics and sound as bright and cheery, but wished that it supported console linking.

[2] The colourful graphics were also praised by Jeuxvideo.com,[34] Kyle Ackerman of Frictionless Insight,[36] David Stockli of Gameswelt,[37] and Justin Harkin of GameSpy.

[36] Andrew Blanchard of EAGB Advance believed its sound and music immerses players into the "wonderland" of puzzles, and refused to review the Game Boy Color version, saying the Game Boy Advance version is identical apart from "more levels and superior sound/graphics/animation".

[32] The music was criticised by Tha Wiz of GameZone as "a little repetitive and forgettable", but he liked the variety of game modes.

[41] Tracy Erickson of PocketGamer criticised the iOS version's lack of an online leaderboard, but nevertheless described it as "a highly polished puzzler that provides a good mental workout".

[42] Peter Lettieri of TouchArcade agreed with Erickson about the iOS version's lack of an online leaderboard, but complimented the gaily coloured levels and blocks.

[39] IGN's Levi Buchanan shared his views on the flamboyant graphics and lack of an online leaderboard.

[30] Eurogamer's Kristan Reed described the iOS version's Master Challenges as "insanely smug" and the game itself as "digital crack".

[33] A reviewer of PSP Minis described the PlayStation Portable version as "Very cheery" commented that it almost felt like a game show.