Feel free to ask questions about the jam here..!
Particles are allowed:
FAQ: https://itch.io/jam/goedware-game-jam-limited-shapes/topic/5095833/faq
It will be used for how well you used the allowed shapes, not using other shapes and also you can still polish with particle effects, color, shades and bloom etc. for example. That is also visual design. So how you mix shapes, colors effects into a nice visual design.
PS: Be aware that particle system can only contain particles that are in the allowed shape list like circle and regular pentagon.
Best example I can give: let's say I want to make Saturn (the planet with the rings), a very simple and basic one.
Can I use the sphere to make the planet, and a circle to be the ring? The circle would be "cutting the sphere in half". Also, for the textures, can it be the blurry visuals of planets and the concentrinc rings for the ring?
All in all, there are still only two shapes (sphere and circle), though the camera might make the circle look oval sometimes...
That seems to me ok. Sphere and circle are allowed. If by camera perspective it sometimes looks as an oval or cutting in half that is not a problem. The underlying shapes are still the correct ones and you are not deliberate creating ovals.
Blurry and concentric rings are allowed as long as the rings are circles of course and no other new shapes are introduced by texturing.
Yes indeed, but if we can see in 3D that it is a pyramid by rotating or walking around or multiple angles or lighting and shadows, than it is ok and you do not need to avoid that sometimes it can look like a triangle from a certain angle. Only if it always looks like a triangle and never can be seen as a real pyramid it is not allowed.
Yes, you can.
Shaders and textures may change colour, lighting, or material effects, but they may not introduce new, clearly recognizable shapes.
Also the original shape must remain visually clear.
Example not allowed: Applying a brick texture where each brick is clearly a rectangle.
From the FAQ as extra:
Hi, I had a question regarding the walls. I'm creating a 2D game where the border of the game closes in when the player loses a life. Would I be able to make the walls still retain the rectangular shape as defined by the original game border, or would this break the rules of using only pentagons & circles? I drew a quick graphic below to explain what I mean a little more easily:
Yes it is, you can find it in the FAQ/Rules in this section: