Yes, talking about retro gaming is always fun, also for me. I've been into this topic for a long time too, actually, since I got my first Atari-2600 back in the year 1982 (before i had a Philips pong-machine, but it had no interchangeable game-modules), then the first Commodore-64 in 1984, some years later an Amiga-500 and so on.
In the last 10 years, at least 500 games have been released for the C64, if that's enough, so i am sure, no other retro-system will come anywhere close. If you take a look at the website "Lemon64", for example, where newer C64 games have been added since the beginning of this year and the archive has already grown from around 4700 games before, to over 7270 games now. It's crazy. Looks like, the C-64 will soon be mainstream again. :-) *lol*
I'm just afraid, that this big retro-theme is going a bit beyond the scope here, because this page is actually about the new C64-game "River Barrage". So, maybe we should get back to the topic.