Space Grotesk has multiple OpenType features: standard ligatures, fractions, numerators, denominators, scientific inferiors, old style figures, lining figures, proportional figures, tabular figures, along with slashed zero, stylistic sets, and case sensitive.
Newer versions of Space Grotesk come with a typical grotesk lowercase g as default, with the older Space Mono style one available a stylistic alternate (SS02).
Update 12 December 2019 Version 1.1.6
Update 07 December 2019 Version 1.1.5
Update 31 August 2019 Version 1.1.4