Some of these games were made back in 2007 and the source files and even the Flash version I built them on no longer exists.
It's no small feat to dig out all 30 files from the last 12+ years, fix all the issues and update to work in Adobe Flash CS6 (some were built with swishMAX which doesn't exist anymore) and converting them to HTML5 would be a massive endeavour.
They are purely for those who want to play a few old nostalgic games and for most (I assume) it's just a case of double clicking the SWF and it runs fine.
As for the file size I don't think 140 megabytes is that big a download for a pack of 30 games in this day and age.
Thanks for the best wishes on my Patreon endeavours, appreciate it!