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'''Ball''', or called the '''player ball''', is the core of [[Ballance]] and the only element that can be controlled by the player directly. The mean diameter of every type of ball is 4 meters(0.8 units): while the shapes of wood ball and stone ball are perfectly round, the paper ball is irregular, with its maximum width being 5 meters(1 unit). By using [[transformer]]s the current ball type can be changed.

质量轻且灵活，是三种球类中手感最为均衡的。它可以推动各种Lightweight and flexible, it has the most balanced feel among the three types of balls. It can push all kinds of [[机关大全|机关objects]]，但需要一定的助跑；遇见大量, but it needs a certain run-up; when encountering a large number of [[机关大全|机关objects]]时（如大量(such as a large number of [[箱子box]]）显得无能为力。此外，它可以被最少6个风扇叠加吹起；理论上可以跨过无数个es), it seems powerless. In addition, it can be lifted by a minimum of 6 stacked ventilators; theoretically it can cross an infinite number of [[箱式浮板tilting blocks]]（需要高技术水平）。(requires high skill level).

The default ball type on start of Level 13. 质量为10吨。外观总体上呈青绿色，表面有大量的坑。它的力量大，可以无需助跑推动各种机关；沙袋不容易阻挡它；但它的惯性巨大，不易操控。不过由此也可以被用在It has a mass of 10 tons. The appearance is generally turquoise, with a large number of pits on the surface. It has great strength and can push various mechanisms without a run-up; and cannot be easily blocked with sandbags; but its inertia is huge and it is not so easy to control. However, this can also be used in [[制图|自制地图custom maps]]中通过“过山车”式设计。事实上，第9、13关就有了这种设计。它还可以使with a "rollercoaster" design. In fact, levels 9 and 13 have this design. It can also break [[软木桥suspension bridges]]断裂。此外，它可以被最少32个风扇叠加吹起；理论上可以跨过3个. In addition, it can be lifted by a minimum of 32 stacked ventilators; in theory it can straddle 3 [[箱式浮板tilting blocks]]（需要高技术水平）。(requires high skill level).

The paper ball weighs 0.2 ton. There does not exist any paper [[transformer]]s in unmodified Level 1, and paper ball also cannot be used。其外观为数张报纸粘合而成的不规则白色球体，棱角分明；十分轻盈，可被风扇吹起，不会压开used there. Its appearance is an irregular white sphere made of several newspapers glued together, with sharp edges and corners; it is very light, can be blown by a ventilator, and will not press open a [[箱式浮板tilting block]]，但是不能推动大多数机关（, but it cannot push most objects (the walls of the [[升降机elevator]]围墙可以被纸球用力助跑推开；can be pushed away by a paper ball; [[推板Bascule bridge]]在特定情况下能够被推开；can be pushed away under certain circumstances; [[箱子Box]]可以非常困难地推开；can be pushed away with great difficulty; [[单摆Turnstile]]可以被轻松推开）。此外，由于其表面不平整，因此无法以任何方式（包括借助定位杆对齐）与单轨对齐而安全通过。can be pushed away easily). Also, because of its uneven surface, it can't be aligned with a monorail, even with rails or poles.

* Only Objects are only loaded when a ball comes near the modules will they be loaded, it; otherwise they are "frozen".

* Shapes The shapes of the wood ball and the stone ball are perfect balls with the diameters of 4 meters(0.8 units), which are fixed in scripts, which means that only the appearances, not the hitboxes of wood/stone balls can be changed by modifying Balls.nmo; the shape of paper ball is irregular and its hitbox can even be modified in Balls.nmo. * Though the paper ball has a elasticity 4 times of the stone ball, 2 times of the wood ball, 修改Ballsmodifying Balls.nmo时将三者等比调高，制作出nmo can increase the ratio, and and when the [[弹力球Bouncy Ball]]时却会导致石球表观弹力高于木球，木球表观弹力高于纸球。推测这可能是三者空气阻力不同所致。is produced, the apparent elasticity of the stone ball is higher than that of the wooden ball, and the apparent elasticity of the wooden ball is higher than that of the paper ball. It is speculated that this may be caused by the difference in air resistance among the three.

{{element listObjects}}