Dont think theres any games i COULD have played like that, but most obscure game that i really loved is maybe
Dragon Ball Z: Legendary Super Warriors for GBC.
Sad that this never got a sequel on GBA. It had some damn awesome sprites for a GBC game.
The thing that i always hold down as its strongest ...uhh Strength? (Sorry, i had a mental vocabulary failure..) is the fact it actually covered the entirety of Z, AND had every important character playable, incl SSJ+SS3 Gotenks, and Super Vegito (Vegito Super Saiyan ingame)
Ill still hold up LSWs roster as the minimum roster a DBZ game needs.
Dont remember any examples, but i do remember feeling strongly about this.
Only thing i think is worth noting is the Kid/Teen Gohan bit where theres only one Kid/Teen Gohan but he has base-SSj and SS2, and im ok with games having Base Kid Gohan, and no Base Teen/Youth Gohan but only ss1 and ss2.
This is for absolute minimum of course.
Yeah, only game that I recall having the entire plot of Z before Tenkaichi was Legends on PSX. A game I only discovered in my early teens through the wonders of emulation.