to be honest i prefer cryp-games rather than kingdice as far as investment is concerned and i think it should be an obvious choice too.
take a closer look at the charts and how they have been changing. crypto-games have been performing very well with always giving a decent amount of profit and never getting out of the lines.
but if you look at week 21 and 22 you can see that kingdice has had some terrible weeks and it is not a small loss but a huge drop in profit and leading to massive losses in those two weeks and it can happen again.
in short i prefer a small but steady profit than something that swings around a lot.
In gambling investments there is not such thing as "steady" profit. If a site has highrollers, then the swings are obvious that will exist.
KingDice should also take some credit here - You have no leverage which is half the problem with some other sites!