Osomatsu-kun: Back to the Me no Deppa no Maki is a menu-based adventure game based on the Osomatsu-kun manga and anime license, about the surreal slice-of-life adventures of a family of sextuplets and their family and neighbors. It is the second game based on the license, the first being 1988's Osomatsu-kun: Hachamecha Gekijou for Sega Master System.
Back to the Me no Deppa no Maki has a time-travelling theme (its title is a riff on Back to the Future) and sees breakout character Iyami in the lead as he causes mischief across the present day, the Edo period and the prehistoric era.
In addition to common commands represented by ideograms, including an ear for listening to NPCs and a shoe for moving to different areas, there are a few distinctive and context-based commands too, including one (a light bulb) that allows the player to read the protagonist's innermost thoughts for more information on their current situation. Additionally, the player moves around via a top-down overworld view usually seen in RPGs.