In my opinion, a game logo should look good even when scaled down, and neither the old nor the new version does that.
But if I had to choose, I’d keep the old one because I think the new one looks too much like an “AI” design.
Edit: why not use a simple rusty gear with moss and maybe mushrooms on top?
Edit: I've always had something like this in mind:
Edit: @Benjo pointed out it's way too similar to Factorio's icon, and he's right.
I made another try adding a clock here:
New way better version by @Zorkman here:
And tweaks of mine: