There are two categories of Investor Visa for New Zealand, Investor 1 and Investor 2. Permanent Residency (PR) can be obtained by investing in residential property, commercial property, and certain high growth investments including government bonds.
No maximum age
Spend at least 44 days per year in New Zealand during the final 2 years of the investment period
No annual quota
No English language requirement
Investment of NZ$10,000,000 for 3 years