This game is inspired by 2 other io games - arras.io and digdig.io. Mine rocks, Get gems, Cash them out at the vault, Claim Outposts, Steal from the core chambers, Shop for upgrades, Upgrade your tank, and Kill Players. A complex game and a simple 2d architecture put into one of my most precious projects :)
A single player game with 20 levels; Not enough time to complete the level? Borrow time from other levels. Every time you borrow from a level, that level's given time decreases. Try to finish level 20 within the given time.