EU refers to the European region (PAL territory). Nintendo Switch is region-free, but EU versions often have specific differences:
Title: 5 Tips for Starting Captain Tsubasa: Rise of New Champions (EU Version) Captain Tsubasa--- Rise Of New Champions -XCI--EU...
✘ No manual passing — AI controls off-ball movement
✘ Online player base in EU can be small (mostly Japan/Asia)
✘ Repetitive dialogue in story mode
✘ Steep learning curve for timing V-Actions EU refers to the European region (PAL territory)