This is C# port of Windmill Software's classic game from 1983, remastered by Andrew Jenner. Port is based on Marek Futrega's Java source (can be downloaded from http://www.digger.org/download.html) and includes playback feature. WinForms is used as a renderer. It builds in Visual Studio 2017 with .NET 4.6.
Input keys:
Arrow keys Move
F1 Fire
Esc Change game mode (one player/two players)
Numpad+ Increase game speed
Numpad- Decrease game speed
F10 Exit