: If you have proof of purchase from a store but no serial, contact NI Support
From there, you can upgrade to Komplete Standard (which includes Maschine 3) for a crossgrade price. You pay once, own it forever, no subscription.
Released in late 2016, version 2.5.1 introduced several key workflow enhancements and content updates that made it a popular target for "unlocked" versions:
: This is the official hub for downloading and managing all NI software.
: Native Instruments often offers a free trial for their products, including Maschine 2. This can be a good way to test the software and see if it meets your needs before deciding to purchase.