Instead, this controller’s defining feature is its full-colour screen, perched where the touchpad is on a PS4 and PS5 ...

Both tend to include skills trees, leveling up, rich worlds, combat of some kind, and plenty of gear to pick up.

The KK3 is the cheapest variant, eschewing a lot of the extra features to deliver a basic controller without a lot of extra frills you may not even specifically need ... button and the KK3 would ...