Pixel Toolbox is a set of frameworks designed to create a custom experience on Idle Pixel making it possible to add new custom enemies, quests and shops. You don't need to use all scripts, each script can work individually
Anwinity's Idle Pixel+ is not needed, but it will give a better experience for both the developer and the users.
Pixel Shop -- It can add new shop, currency and buyable items.
Pixel Quests -- It can add new quests. (coming soon)
Pixel Combat -- It can add new enemies and handle custom combats.