Remember back in October when someone found four prototype copies of Akira for the Game Boy? Well that someone - Patrick Scott Patterson - has recently released gameplay video of one of the prototype Akira carts being played on the Super Game Boy.

The game looks promising despite its unfinished state, with the bike section looking particularity fun. Sadly the platforming stage mechanics are not implemented at all despite having all the graphics in place. At least now we can have a better glimpse at what the game's producers were aiming at, sticking close to the famous anime movie's plot.

In far better shape of development is the prototype of Basento's Heavy Weight Hockey for the NES. This particular effort on ice hockey features violence and exploding goalies for each conceded goal, giving even the likes of Mutant League Hockey on the Mega Drive / Genesis a run for its money.

You even get points for disposing of opponent players like Speedball 2: Brutal Deluxe but watch out for friendly fire. It certainly looks like a fun alternative to the other "kings of the rink" on the NES (Konami's Blades of Steel, Nintendo's own Ice Hockey and Technos Japan-only Ike Ike! Nekketsu Hockeu-Bu) and the presentation is really quite excellent, which makes a real shame this game ended up never being released. Adding to the mystery is the fact there are no known records of a video game company called Basento, leaving us in the dark on whom was responsible for this zany game and why it never got a publisher in the first place.

Last but not least there's Mall Rats for the Mega Drive. Sadly it is not a video game adaptation of Kevin Smith's 1995 cult movie Mallrats featuring an alarmingly young Jason Lee and Shannen Doherty (ask your parents) but is instead game about exterminating giant mice in a mall.

Interesting insights onto games which were believed to have been lost forever and games that never were. Do you think any of these three could have made a dent in the '90s market? Would you have bought any of them? Fire those comments away!