Then why post icegirl? You shouldn't post like that, it's spam.
Anyway I have both uratamas and entamas. I enjoy them both. Here's the similarities:
Gameplay: You play the games to get guts points. You also raise characters depending on those points. You also get secret creatures to get, matchmaker, dating service cards and ability to connect with others like you.
Physical look: Both have a bigger antenna thing like the V34 but bigger.
Here's the differences:
Appearance: Ball on antenna is the entama and Star is the uratama. Uratama's pixels are also blue comparing to entamas which are black.
Games: Games are different from entama to uratama.
Groups/points: Points in Entamas can be in the groups of Intelligence, Fashion/Style and Kindness. Uratamas have Humour/Comedy, Gorgeous and Passion.
Finally Prices...entamas I notice right now are higher in price than uratamas. Entamas seem only found on Ebay whereas the uratama can be found there AND yesasia.com.