Hi . Yes you can connect a v6 with a v5 but you cannot connect a v5 or v6 with any other older versions. a v4 can connect with the older versions. v4 has 1 game to start out with and as your tama ages you get more games to play and your tama can go to school and get a job. A v6 is music themed your tama v6 will form a band at the teen age stage and depending on how well your band does can become a star and make alot of points or become a street musician and wont make that much to live off of. on the v6 the band manager is the match maker and you can win awards if u get star ranking to 1st place and play in a concert. also bothe v4 and v6 have a shop.