There is only 2 days worth of content here. Only 3 islands then reset. The 2x speed lasts longer each time you activate it but eventually my game crashed and it reset back to 2 minutes. I had it up to 20 minutes before it crashed so now I don't use 2x speed. The gameplay loop is to start upgrading one thing, then close the app and wait for it to tell you the upgrade is complete. My survivors were so fast, they actually waited for the trees to respawn instead of gathering rocks.... Please fix. Ty