Half-Minute Hero: Super Mega Neo Climax Ultimate Boy is an action-packed RPG shoot-em-up game developed by Opus. The game features four different game modes, each with its unique gameplay and style. Players have only 30 seconds to complete each objective in most modes, adding an exciting sense of urgency to the game. The game also supports multiplayer, making it more engaging to play with friends.

The game's Hero mode is the most traditional Japanese RPG style and is where players will spend most of their time. Players can buy extra time from the Time Goddess to extend their gameplay. Princess mode is a side-scrolling shooter game, while Evil Lord mode is an RTS where players summon monsters to complete specific objectives. Lastly, Knight and Wizard mode require players to defend the Wizard and eliminate all the monsters.

The Super Mega Neo Climax Ultimate Boy edition is a remastered version of the original PSP game for PC. The game features improved graphics that resemble an anime cartoon style rather than the classic 8-bit JRPG one. The edition includes every mode from the base game apart from two stages that were cut for unknown reasons.