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DDrawCompat
DirectDraw and Direct3D 1-7 compatibility, performance and visual enhancements for Windows Vista, 7, 8, 10 and 11
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
In short, you extract the zip, rename the game's main directory as "Metal Knight", then create a folder inside, and name it "sav", otherwise the game will crash if you attempt to save. You'll also need to download a directdraw dll file called DDrawCompat (link), and place that file in the game's main directory.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.