I defeat the Polyphemus, but cube don`t unlocked. Why?

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I wish you could get retro boulder

you forgot the "test" boulder when you test a map
i know it can't be played on the regular but im still curious

Humpty Dumpty's double jump can climb the cliff at the start of the India obstacle course, which basically hands you the match on a silver platter.

There's probably plenty of other cheesy shenanigans Humpty can get up to, but I haven't really found them yet :/

in my opinion i think the cube boulder is a good "starting" boulder for war, example, you use the cube boulder at the beggining to deal damage to the castle gate, and then you use another ball thats quick to recharge (example: happy boulder or regular boulder) to continue dealing damage

I don't think that any boulder is just the best at everything, but my personal pick is Happy Boulder, mostly thanks to it's fast recharge.

Looks like it. Just ran a little test with the Meatball losing health and got these numbers for equal speed:
15% HP loss-151 damage
40% HP loss-150 damage
70% HP loss-138 damage
95% HP loss-131 damage

I have one possible assumption about this weird issue with meatballs. There is a factor that decrease damage of other boulders as their health goes down. Probably another system is applied to meatball to increase it's damage when their health lowers. Probably the devs have mistakenly applied both of the systems to the meaty sphere as you can see the damage of it did not change a lot at full and little health. Yet when the same thing happens to other boulders their damage usually decreases a lot more.(for example,230± to 140± for lava boulder and 195± to only around 110 for default boulder)

Did a test with an self-built map on Damage of meatball of different health values on the Enemy Gate.
It turns out that he full-health meatball do have around 150 damage at full speed.
When it reaches around half health, the damage actually seem to decrease a little bit (145± in my case) instead of increasing as described.
I repeated it with those giant meat lumps with only dashes of health left and this time the average damage was only 125±
In all of these experiments I used an cannon to fire all the meatballs of different sizes and smash it directly to enemy gate (all the meatballs enters the cannon slowly) so the speed of them should be about the same.
This result seems to be contrary to the description and weirdly there seems no possible way to deal 200+ damage as it is shown in the description.