101 is just a silly title I used for no reason! Don't be so literal Crackaface

It can be any from any time period. Assume these people have no lives and plenty of time to play them. And even if they aren't interesting, they still have to beat them It's not like teachers assign fun homework all the time.

They wouldn't necessarily have to make an impact. Take something like... Soul Calibur probably had more impact on the Fighting genre than Mortal Kombat, but MK had lots of controversy so I picked it. It's kind of up to you.