abebly

I wouldn't mind seeing some of those make it into the pause screen of the other platforms.

If you don't want people to grind, you might try keeping players from gaining gems unless they've surpassed the previous level high. So, if I get 500 the first run, I keep all that. On a second run, if I get 600, I keep 100. Or you could restrict certain upgrades to game progression. For instance, you might keep a certain shovel upgrade out of reach until Mole Knight is defeated.