Upgrades

Upgrades are bought with gem rating and can either make games easier or improve the reward. You do not lose gem rating from upgrading. The cost of an upgrade starts at 500 of the gem color's rating, the time starts at 1 minute, the cost and time of an upgrade double for every previous upgrade. It is currently unknown if there is a maximum time. It is recommended to upgrade as many times as possible before rebirthing, as rebirthing sets each individual gem rating to zero.