Boku Tachi no Mirai was created on 2011-08-03.
It is written: 僕達の地球
Mirai Ninja was created in 1988.
Mirai Yashima was created in 1979.
Natsukashii Mirai was created on 1986-11-21.
Mirai Robo Daltanious was created in 1979.
Aisubeki Mirai e was created in 2008.
Mirai e... was created on 2010-05-26.
Mirai no Kakera was created on 2003-08-06.
"tachi" is usually tacked onto another word, indicating more than one. It is only used with words such as "watashi", "boku", etc. For example, "Boku-tachi" is said by a male, and essentially means "My friends and I..." (That is of course assuming that the people he is with are friends. A lot of speaking Japanese is about context.)
Mirai Sentai Timeranger was created on 2000-02-13.
Boku no Natsuyasumi was created on 2000-06-22.
Boku no Miteiru Fūkei was created in 2009.