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We obtain a finite generating set for the level 2 twist subgroup of themapping class group of a closed non-orientable surface. The generating setconsists of crosscap pushing maps along non-separating two-sided simple loopsand squares of Dehn twists along non-separating two-sided simple closed curves.We also prove that the level 2 twist subgroup is normally generated in themapping class group by a crosscap pushing map along a non-separating two-sidedsimple loop for genus $g\geq 5$ and $g=3$. As an application, we calculate thefirst homology group of the level 2 twist subgroup for genus $g\geq 5$ and$g=3$.

A finite generating set for the level 2 twist subgroup of the mapping class group of a closed non-orientable surface