Everything you need to know about the hit Mobile & Steam Games: Idle Monster Tower Defense and Idle Monster TD: Evolved! Idle Monster Tower Defense released in March of 2020 right at the start of the Pandemic and quickly amassed a cult following. The game grew quicker than the solo Dev, Tbiz5270 could keep up with. In February 2022, Tbiz released the spiritual sequel to Idle Monster Tower Defense: Idle Monster TD: Evolved, taking all of the things everyone loved about the first game, expanding upon it by adding desired features such as Pets, real Monster Evolutions, and much much more.