The 76 MB is actually the expected minimum size for any BazzBasic executable — not a weakness of the game itself.
When BazzBasic compiles a program to a standalone .exe, it bundles the .NET 10 runtime with it, since most users won't have it pre-installed. The runtime alone accounts for roughly 70 MB. The actual game code and assets add only a small amount on top of that.
A "compile without bundling .NET" option is on the roadmap for a future BazzBasic version, which would bring the executable size down significantly for users who already have .NET 10 installed.
For context, many popular game engines (Unity, GameMaker, etc.) routinely produce 300–600 MB packages for simple games, because they bundle their own large runtimes too — so BazzBasic is far from alone in this situation.
The RGB Vision game source itself could be delivered with BazzBasic releases easily. Specially if .wav files would be converted to .mp3. Though, there is already over 150 example codes in Examples and Examples/rosetta-code folders.