We always try to get the best retro gaming updates for you on Indie Retro News, as we've just found out while looking through the Commodore 64/128 Facebook group, that Søren Trautner Madsen is still working on his upcoming Commodore 64 game of 'Slam Siblings'; a rather cool game which according to the creator, is clearly a tribute to the much maligned Super Smash Bros, one of Nintendo's flag ship game franchises.