Simplify the following text for a Grade 7 native English-speaking person.
Original: In addition , touch rugby games are played as training activities for rugby league and rugby union ; as safer variants of rugby , particularly in schools and junior clubs , and as an informal social sport .
Simplified: Touch rugby is a version of rugby that replaces being tackled with being touched . It was invented by Australians who played rugby league and it has many of the same rules .