How is the R36S portable console built with 22,000 retro games from a variety of platforms?

TL;DR

• The R36S handheld retro console packs 22,000 games from platforms like Atari, NES, PlayStation, and Game Boy into a portable, Game Boy-style device.
• Inside, it uses a Rockchip RK3326 board with H9TQ32A4GTMC-URKUM memory, a single PCB, ArkOS 2.0, and two microSD slots for system and games.
• It includes a 3.5-inch IPS OCA display at 640x480, a 3000 mAh battery, and costs around PLN150.
• ArkOS supports more than 90 retro platforms and ScummVM, but 3D-heavy games may slow down, charging is not fast, and there is no video output or Wi‑Fi.