Play Defender Idle 2 Online Game. One of many Defense Games to play online on your web browser for free at KBH Games. Defender Idle 2 is made using Unity technology. Tagged as Defense Games, Idle Games, Incremental Games, and Upgrades Games. Upvoted by 17 players. Other games you might like are Firestone Idle RPG and Magic Chop Idle. No download or installation needed to play this free game. Hope this game brings a little joy into your daily life.