Robot Defense | Amazing Android Game Packs: Bonsai Blast, Abduction! World Attack And

2. Abduction! World Attack: The Cow that Jumped Over the Moon

Often cited as one of the most successful early Android games, (by Lupis Labs) defined the tower defense genre for mobile.

With over 90 levels and elemental power-ups like Fire and Water, it offered a level of depth that was rare for mobile games at the time.