You are downloading the Reaction XAP file v1.2.2.1 for Windows Phone. Reaction is a free Education App: Reaction is a simple educational game you can play with a friend, colleague, your sister, …It will test your capacity of reaction, your ability to find. You can now download the offline XAP package file to install & try it.
Download Locations for Reaction 1.2.2.1 XAP file
Package File
Please Click Here > to retrieve available package files for Reaction.
Please be aware that the Reaction XAP file you are to download is hosted on the Microsoft Store CDN server. You can read more about Reaction or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Reaction XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.