Golden Axe (J) [!] is a WonderSwan port of the popular arcade and console game series Golden Axe. It most likely features side-scrolling beat 'em up gameplay, with the player controlling one of several characters, each with their own unique abilities.  The [!] might indicate unique aspects to this port or unlockable content.  Sega, the original developer of the Golden Axe series, was likely involved in this version, but confirmation is needed. 

Golden Axe (J) [!]

Gensou Maden Saiyuuki Retribution (J) [!]