The location of the gem upgrade right near the beginning of the upgrade tree is a bit strange, and it seems like the "value increase" upgrades don't do anything, but I like the gameplay loop so far.
hi thanks for your comment. About gem upgrade to you mean it's because it's one level down from the gold? Looking at the value increase I see it looks like it's a mislabel issue. Some nodes increase amount of gold nuggets, others the actual value but they share the same label. The actual throughput after each round should be enough to purchase a node (or two rounds) but I'll patch this. Thanks again!