For the best high-quality results, use PCSX2 (PS2 emulator) or Dolphin (GameCube/Wii emulator).
Tom and Jerry: War of the Whiskers was never officially released for PC, you can achieve a "better than original" high-quality experience by playing the PlayStation 2 or GameCube versions through an emulator. Using modern tools like For the best high-quality results, use PCSX2 (PS2
(GameCube) allows for 4K resolution, 60 FPS gameplay, and high-definition texture packs. Best Methods for High-Quality Play For the best high-quality results
The game is abandoned (no official digital sale), but downloading it from abandonware sites is a grey area. If you want to be fully legal, look for a used PC CD‑ROM on eBay and rip it yourself. 60 FPS gameplay