Third party peripherals on CD-i, that's a rare thing. The way how we are treated with modern consoles by companies like Hyperkin and Retro-Bit is something completely different when it comes to CD-i. However, there were actually a few companies who developed CD-i peripherals. The most notable ones were Gamester who developed one of the coolest (and rarest) CD-i gamepads. The Gamester CD-i pad is shaped like a Sega Genesis gamepad and the button feedback is far better compared to the one that Philips released for CD-i. Tecno Plus released an OEM version of the Logitech gamepad (like Philips did too) but they also released the only real official joystick on CD-i, another rare official third party peripheral.
