This game is a bit long for a game jam... but I cleared it anyways. Or well, as much as you can call clearing it. I got to a very large number. It was very satisfying. I think the thing this game needs most is some victory condition to strive for, or, to put an ending once you get all the upgrades, perhaps.
Also a balancing note: All point increase upgrades past +50M don't seem to have any benefit, as their cost would reduce more from a .02% node than the node you're buying would earn you. Past that point, it seems only the % nodes and speed nodes matter. It's not that big an issue though, cos I end up feeling clever by being able to figure out they are not useful, and that's a good feeling.
Finally: Any proper "idle" game needs a volume slider or mute button, so you can leave it on another monitor without it interrupting other things you're doing. The music is good though.