I think the only way you could get the VB6 versions would be if Steve or someone else rehosted the downloads. Steve I would not anticipate being interested, and I don't think anyone else on the forum would want to do this as it is Steve's program, not ours to be distributing.
You might like to check out
Quasar4x which is a VB6 clone, feature-complete except for Invaders I think, and should run a lot faster than the VB6 version ever did. There are a few bugs here and there but I think the last release had fixed almost all of the ones reported.