Just this morning DO made an update which involves the reapers. The story is that when the reapers retreated to their own maps (5-x) the left valuable cargo/chests behind. These chests can be found like normal bonus boxes in every map including 4-4. In order to collect the chests, you need to buy a key in the hangar under extras for 1,500 uri each. 1 Key for every Chest. Inside the chests the rewards are random. They can give small prizes like GG spins, about 100 rounds of RSB, and 10% boosters that last one hour. Or they can also rarely contain amazing bonus's like the 250k uri vengeance design, the new 50 cloak cpu, or the new jump cpu.
Just another way DO is draining our pockets ;)
Just another way DO is draining our pockets ;)