Anecdotal, mine were kept in my parents attic in poorly taped cardboard boxes for 20-30 years until they moved and I gave them to my kids. Still the same fun fo

Anecdotal, mine were kept in my parents attic in poorly taped cardboard boxes for 20-30 years until they moved and I gave them to my kids. Still the same fun for them, none have broken or had any issues being used with newer sets.