Personally I like Uscript more than Playmaker.

I'm asking this here in case nobody could answer me on the Cocoon boards: I tried to publish a game on the googleplay store but I can't upload the app because it says it doesn't have my personal signing. But I'm sure I used the apk signer to create a keystore file to add it to the game on the Cocoon site before building the project. Anyone else experienced the same problem?

So there's no way to do it?

So I have a plane and when the plane goes up from x to x+t in less than 2 seconds I want it to rear up. How do I measure the time span between the two positions?

Should I buy Spriter or there's any free alternative that can provide a decent level of performances?

10x

I found a tutorial about doing an isometric 3d game with C2 but it's not step by step, it's more of a general overview.

do you know any other isometric tutorial with a step by step approach?

is there any add-on/plugin that implements a function to constrain a sprite movement on only one x at a time even when you can move it on both axis? if I remember correctly both Game Salad and Stencyl have this function.

yes, exactly.

Is there any vfx software specifically aimed at 2d game developing?

If not, what do you think are the best vfx programs out there that can be proficiently used for 2d game dev?

do you know what are the best software to do that?

Is it possible to do complex particle effects in C2 like fireballs and plasma explosions or should I use a third party software?