Self explanatory; because how absurd it was. Probably one of the most interesting ones out of every Tiger games as it was mostly base of the Sonic's story of the game. Would be very grateful to see it emulated in some faction, especially for Sonic fans out there who interested as well.

Oh, wow. This looks really interesting. I love the design of this handheld and how it folds out into a mini arcade cabinet. 

I found some more info on it here:  https://info.sonicretro.org/Sonic_Adventure_(LCD_game)

Apparently there were 5 games released in the Tiger "Arcade Table Top" series, all ports of games from Sega's Dreamcast home console.

Thanks for the suggestion!

Huh, all 5 of them base of the Sega games? Interesting.