I did share it, it's included it on the game page!! It just doesn't show on the Toasty Game Jam it seems, that's not your fault. Here's the install instructions that were on the game page. It is free and safe, the official RPGMaker website you can get all the RTP's for free. In XP, it doesn't come preinstalled when you export your game.
Install instructions
NOTICE** You need the RPGMAKER XP RTP to play this game! You can download it for free here, or if you have XP you should be all set.
https://www.rpgmakerweb.com/downloads
Navigate to RTP's and download XP